Home / 715,342.95-987,259.10-429,020.55

Finding the Fourth Proportional to 715,342.95, 987,259.10 and 429,020.55

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Solution

The fourth proportional to 715,342.95, 987,259.10 and 429,020.55 is: 592,099.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,342.95 : 987,259.10 = 429,020.55 : x
  2. Step 2: Convert to fraction form
    715,342.95/987,259.10 = 429,020.55/x
  3. Step 3: Cross multiply
    715,342.95x = 987,259.10 × 429,020.55
  4. Step 4: Simplify right side
    715,342.95x = 423,554,439,929.40
  5. Step 5: Solve for x
    x = 423,554,439,929.40/715,342.95
  6. Step 6: Final answer
    x = 592,099.83

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Double scale
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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.