Home / 679,869.16-938,221.31-373,976.89

Finding the Fourth Proportional to 679,869.16, 938,221.31 and 373,976.89

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Solution

The fourth proportional to 679,869.16, 938,221.31 and 373,976.89 is: 516,089.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,869.16 : 938,221.31 = 373,976.89 : x
  2. Step 2: Convert to fraction form
    679,869.16/938,221.31 = 373,976.89/x
  3. Step 3: Cross multiply
    679,869.16x = 938,221.31 × 373,976.89
  4. Step 4: Simplify right side
    679,869.16x = 350,873,081,084.54
  5. Step 5: Solve for x
    x = 350,873,081,084.54/679,869.16
  6. Step 6: Final answer
    x = 516,089.13

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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.