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Finding the Fourth Proportional to 768,287.76, 1,060,254.09 and 424,122.89

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Solution

The fourth proportional to 768,287.76, 1,060,254.09 and 424,122.89 is: 585,298.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,287.76 : 1,060,254.09 = 424,122.89 : x
  2. Step 2: Convert to fraction form
    768,287.76/1,060,254.09 = 424,122.89/x
  3. Step 3: Cross multiply
    768,287.76x = 1,060,254.09 × 424,122.89
  4. Step 4: Simplify right side
    768,287.76x = 449,678,023,483.85
  5. Step 5: Solve for x
    x = 449,678,023,483.85/768,287.76
  6. Step 6: Final answer
    x = 585,298.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.