Home / 872,933,995.71-1,206,224,691.31-621,602,047.43

Finding the Fourth Proportional to 872,933,995.71, 1,206,224,691.31 and 621,602,047.43

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Solution

The fourth proportional to 872,933,995.71, 1,206,224,691.31 and 621,602,047.43 is: 858,932,910.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,933,995.71 : 1,206,224,691.31 = 621,602,047.43 : x
  2. Step 2: Convert to fraction form
    872,933,995.71/1,206,224,691.31 = 621,602,047.43/x
  3. Step 3: Cross multiply
    872,933,995.71x = 1,206,224,691.31 × 621,602,047.43
  4. Step 4: Simplify right side
    872,933,995.71x = 749,791,737,771,295,488
  5. Step 5: Solve for x
    x = 749,791,737,771,295,488/872,933,995.71
  6. Step 6: Final answer
    x = 858,932,910.69

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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.