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Finding the Fourth Proportional to 607,406.55, 910,591.43 and 429,353.43

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Solution

The fourth proportional to 607,406.55, 910,591.43 and 429,353.43 is: 643,663.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,406.55 : 910,591.43 = 429,353.43 : x
  2. Step 2: Convert to fraction form
    607,406.55/910,591.43 = 429,353.43/x
  3. Step 3: Cross multiply
    607,406.55x = 910,591.43 × 429,353.43
  4. Step 4: Simplify right side
    607,406.55x = 390,965,551,652.34
  5. Step 5: Solve for x
    x = 390,965,551,652.34/607,406.55
  6. Step 6: Final answer
    x = 643,663.71

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1.5x scale

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.