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Finding the Fourth Proportional to 423,031.30, 634,546.95 and 404,368.90

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Solution

The fourth proportional to 423,031.30, 634,546.95 and 404,368.90 is: 606,553.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,031.30 : 634,546.95 = 404,368.90 : x
  2. Step 2: Convert to fraction form
    423,031.30/634,546.95 = 404,368.90/x
  3. Step 3: Cross multiply
    423,031.30x = 634,546.95 × 404,368.90
  4. Step 4: Simplify right side
    423,031.30x = 256,591,052,169.86
  5. Step 5: Solve for x
    x = 256,591,052,169.86/423,031.30
  6. Step 6: Final answer
    x = 606,553.35

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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.