Home / 709,721.96-976,930.34-618,917.72

Finding the Fourth Proportional to 709,721.96, 976,930.34 and 618,917.72

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Solution

The fourth proportional to 709,721.96, 976,930.34 and 618,917.72 is: 851,938.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,721.96 : 976,930.34 = 618,917.72 : x
  2. Step 2: Convert to fraction form
    709,721.96/976,930.34 = 618,917.72/x
  3. Step 3: Cross multiply
    709,721.96x = 976,930.34 × 618,917.72
  4. Step 4: Simplify right side
    709,721.96x = 604,639,498,631.63
  5. Step 5: Solve for x
    x = 604,639,498,631.63/709,721.96
  6. Step 6: Final answer
    x = 851,938.55

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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.