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Finding the Fourth Proportional to 555,125.71, 831,427.39 and 434,430.47

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Solution

The fourth proportional to 555,125.71, 831,427.39 and 434,430.47 is: 650,658.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,125.71 : 831,427.39 = 434,430.47 : x
  2. Step 2: Convert to fraction form
    555,125.71/831,427.39 = 434,430.47/x
  3. Step 3: Cross multiply
    555,125.71x = 831,427.39 × 434,430.47
  4. Step 4: Simplify right side
    555,125.71x = 361,197,391,808.57
  5. Step 5: Solve for x
    x = 361,197,391,808.57/555,125.71
  6. Step 6: Final answer
    x = 650,658.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.