Home / 989,478.40-1,484,217.60-324,630.40

Finding the Fourth Proportional to 989,478.40, 1,484,217.60 and 324,630.40

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Solution

The fourth proportional to 989,478.40, 1,484,217.60 and 324,630.40 is: 486,945.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,478.40 : 1,484,217.60 = 324,630.40 : x
  2. Step 2: Convert to fraction form
    989,478.40/1,484,217.60 = 324,630.40/x
  3. Step 3: Cross multiply
    989,478.40x = 1,484,217.60 × 324,630.40
  4. Step 4: Simplify right side
    989,478.40x = 481,822,153,175.04
  5. Step 5: Solve for x
    x = 481,822,153,175.04/989,478.40
  6. Step 6: Final answer
    x = 486,945.60

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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.