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Finding the Fourth Proportional to 521,637.90, 731,867.70 and 521,637.90

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Solution

The fourth proportional to 521,637.90, 731,867.70 and 521,637.90 is: 731,867.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,637.90 : 731,867.70 = 521,637.90 : x
  2. Step 2: Convert to fraction form
    521,637.90/731,867.70 = 521,637.90/x
  3. Step 3: Cross multiply
    521,637.90x = 731,867.70 × 521,637.90
  4. Step 4: Simplify right side
    521,637.90x = 381,769,930,105.83
  5. Step 5: Solve for x
    x = 381,769,930,105.83/521,637.90
  6. Step 6: Final answer
    x = 731,867.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.