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Finding the Fourth Proportional to 425,320.61, 637,316.49 and 361,879.83

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Solution

The fourth proportional to 425,320.61, 637,316.49 and 361,879.83 is: 542,254.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,320.61 : 637,316.49 = 361,879.83 : x
  2. Step 2: Convert to fraction form
    425,320.61/637,316.49 = 361,879.83/x
  3. Step 3: Cross multiply
    425,320.61x = 637,316.49 × 361,879.83
  4. Step 4: Simplify right side
    425,320.61x = 230,631,983,057.40
  5. Step 5: Solve for x
    x = 230,631,983,057.40/425,320.61
  6. Step 6: Final answer
    x = 542,254.43

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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.