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Finding the Fourth Proportional to 478,915.65, 717,888.38 and 310,542.77

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Solution

The fourth proportional to 478,915.65, 717,888.38 and 310,542.77 is: 465,499.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,915.65 : 717,888.38 = 310,542.77 : x
  2. Step 2: Convert to fraction form
    478,915.65/717,888.38 = 310,542.77/x
  3. Step 3: Cross multiply
    478,915.65x = 717,888.38 × 310,542.77
  4. Step 4: Simplify right side
    478,915.65x = 222,935,046,076.01
  5. Step 5: Solve for x
    x = 222,935,046,076.01/478,915.65
  6. Step 6: Final answer
    x = 465,499.61

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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.