Home / 1,512,439,989.71-2,087,315,975.95-917,677,794.56

Finding the Fourth Proportional to 1,512,439,989.71, 2,087,315,975.95 and 917,677,794.56

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Solution

The fourth proportional to 1,512,439,989.71, 2,087,315,975.95 and 917,677,794.56 is: 1,266,485,635.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512,439,989.71 : 2,087,315,975.95 = 917,677,794.56 : x
  2. Step 2: Convert to fraction form
    1,512,439,989.71/2,087,315,975.95 = 917,677,794.56/x
  3. Step 3: Cross multiply
    1,512,439,989.71x = 2,087,315,975.95 × 917,677,794.56
  4. Step 4: Simplify right side
    1,512,439,989.71x = 1,915,483,521,346,919,168
  5. Step 5: Solve for x
    x = 1,915,483,521,346,919,168/1,512,439,989.71
  6. Step 6: Final answer
    x = 1,266,485,635.39

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.