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Finding the Fourth Proportional to 731,390.41, 1,009,404.01 and 425,479.68

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Solution

The fourth proportional to 731,390.41, 1,009,404.01 and 425,479.68 is: 587,211.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    731,390.41 : 1,009,404.01 = 425,479.68 : x
  2. Step 2: Convert to fraction form
    731,390.41/1,009,404.01 = 425,479.68/x
  3. Step 3: Cross multiply
    731,390.41x = 1,009,404.01 × 425,479.68
  4. Step 4: Simplify right side
    731,390.41x = 429,480,895,165.52
  5. Step 5: Solve for x
    x = 429,480,895,165.52/731,390.41
  6. Step 6: Final answer
    x = 587,211.55

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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.