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Finding the Fourth Proportional to 768,216.62, 1,060,139.12 and 424,052.74

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Solution

The fourth proportional to 768,216.62, 1,060,139.12 and 424,052.74 is: 585,192.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,216.62 : 1,060,139.12 = 424,052.74 : x
  2. Step 2: Convert to fraction form
    768,216.62/1,060,139.12 = 424,052.74/x
  3. Step 3: Cross multiply
    768,216.62x = 1,060,139.12 × 424,052.74
  4. Step 4: Simplify right side
    768,216.62x = 449,554,901,002.50
  5. Step 5: Solve for x
    x = 449,554,901,002.50/768,216.62
  6. Step 6: Final answer
    x = 585,192.89

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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.