Home / 710,691.08-1,066,147.40-426,314.79

Finding the Fourth Proportional to 710,691.08, 1,066,147.40 and 426,314.79

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Solution

The fourth proportional to 710,691.08, 1,066,147.40 and 426,314.79 is: 639,538.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,691.08 : 1,066,147.40 = 426,314.79 : x
  2. Step 2: Convert to fraction form
    710,691.08/1,066,147.40 = 426,314.79/x
  3. Step 3: Cross multiply
    710,691.08x = 1,066,147.40 × 426,314.79
  4. Step 4: Simplify right side
    710,691.08x = 454,514,399,609.31
  5. Step 5: Solve for x
    x = 454,514,399,609.31/710,691.08
  6. Step 6: Final answer
    x = 639,538.63

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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.