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Finding the Fourth Proportional to 425,842.97, 637,435.85 and 313,649.87

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Solution

The fourth proportional to 425,842.97, 637,435.85 and 313,649.87 is: 469,496.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,842.97 : 637,435.85 = 313,649.87 : x
  2. Step 2: Convert to fraction form
    425,842.97/637,435.85 = 313,649.87/x
  3. Step 3: Cross multiply
    425,842.97x = 637,435.85 × 313,649.87
  4. Step 4: Simplify right side
    425,842.97x = 199,931,666,730.41
  5. Step 5: Solve for x
    x = 199,931,666,730.41/425,842.97
  6. Step 6: Final answer
    x = 469,496.23

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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.