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Finding the Fourth Proportional to 679,903.32, 938,098.62 and 425,127

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Solution

The fourth proportional to 679,903.32, 938,098.62 and 425,127 is: 586,570.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,903.32 : 938,098.62 = 425,127 : x
  2. Step 2: Convert to fraction form
    679,903.32/938,098.62 = 425,127/x
  3. Step 3: Cross multiply
    679,903.32x = 938,098.62 × 425,127
  4. Step 4: Simplify right side
    679,903.32x = 398,811,052,024.74
  5. Step 5: Solve for x
    x = 398,811,052,024.74/679,903.32
  6. Step 6: Final answer
    x = 586,570.24

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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.