Home / 709,721.71-976,930.00-618,917.47

Finding the Fourth Proportional to 709,721.71, 976,930.00 and 618,917.47

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Solution

The fourth proportional to 709,721.71, 976,930.00 and 618,917.47 is: 851,938.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,721.71 : 976,930.00 = 618,917.47 : x
  2. Step 2: Convert to fraction form
    709,721.71/976,930.00 = 618,917.47/x
  3. Step 3: Cross multiply
    709,721.71x = 976,930.00 × 618,917.47
  4. Step 4: Simplify right side
    709,721.71x = 604,639,040,045.75
  5. Step 5: Solve for x
    x = 604,639,040,045.75/709,721.71
  6. Step 6: Final answer
    x = 851,938.21

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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.