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Finding the Fourth Proportional to 1,008,959,338.40, 1,513,439,007.60 and 986,284,522.40

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Solution

The fourth proportional to 1,008,959,338.40, 1,513,439,007.60 and 986,284,522.40 is: 1,479,426,783.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,959,338.40 : 1,513,439,007.60 = 986,284,522.40 : x
  2. Step 2: Convert to fraction form
    1,008,959,338.40/1,513,439,007.60 = 986,284,522.40/x
  3. Step 3: Cross multiply
    1,008,959,338.40x = 1,513,439,007.60 × 986,284,522.40
  4. Step 4: Simplify right side
    1,008,959,338.40x = 1,492,681,468,792,295,936
  5. Step 5: Solve for x
    x = 1,492,681,468,792,295,936/1,008,959,338.40
  6. Step 6: Final answer
    x = 1,479,426,783.60

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.