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Finding the Fourth Proportional to 484,374.80, 726,562.20 and 425,277.20

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Solution

The fourth proportional to 484,374.80, 726,562.20 and 425,277.20 is: 637,915.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,374.80 : 726,562.20 = 425,277.20 : x
  2. Step 2: Convert to fraction form
    484,374.80/726,562.20 = 425,277.20/x
  3. Step 3: Cross multiply
    484,374.80x = 726,562.20 × 425,277.20
  4. Step 4: Simplify right side
    484,374.80x = 308,990,338,041.84
  5. Step 5: Solve for x
    x = 308,990,338,041.84/484,374.80
  6. Step 6: Final answer
    x = 637,915.80

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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.