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Finding the Fourth Proportional to 681,018.57, 939,355.65 and 425,926.89

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Solution

The fourth proportional to 681,018.57, 939,355.65 and 425,926.89 is: 587,497.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,018.57 : 939,355.65 = 425,926.89 : x
  2. Step 2: Convert to fraction form
    681,018.57/939,355.65 = 425,926.89/x
  3. Step 3: Cross multiply
    681,018.57x = 939,355.65 × 425,926.89
  4. Step 4: Simplify right side
    681,018.57x = 400,096,830,608.43
  5. Step 5: Solve for x
    x = 400,096,830,608.43/681,018.57
  6. Step 6: Final answer
    x = 587,497.68

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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.