Home / 1,187,931,229.25-1,781,964,939.31-314,509,901.75

Finding the Fourth Proportional to 1,187,931,229.25, 1,781,964,939.31 and 314,509,901.75

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Solution

The fourth proportional to 1,187,931,229.25, 1,781,964,939.31 and 314,509,901.75 is: 471,782,881.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187,931,229.25 : 1,781,964,939.31 = 314,509,901.75 : x
  2. Step 2: Convert to fraction form
    1,187,931,229.25/1,781,964,939.31 = 314,509,901.75/x
  3. Step 3: Cross multiply
    1,187,931,229.25x = 1,781,964,939.31 × 314,509,901.75
  4. Step 4: Simplify right side
    1,187,931,229.25x = 560,445,617,984,332,800
  5. Step 5: Solve for x
    x = 560,445,617,984,332,800/1,187,931,229.25
  6. Step 6: Final answer
    x = 471,782,881.18

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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.