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Finding the Fourth Proportional to 768,283.16, 1,060,331.08 and 428,821.88

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Solution

The fourth proportional to 768,283.16, 1,060,331.08 and 428,821.88 is: 591,830.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,283.16 : 1,060,331.08 = 428,821.88 : x
  2. Step 2: Convert to fraction form
    768,283.16/1,060,331.08 = 428,821.88/x
  3. Step 3: Cross multiply
    768,283.16x = 1,060,331.08 × 428,821.88
  4. Step 4: Simplify right side
    768,283.16x = 454,693,167,148.03
  5. Step 5: Solve for x
    x = 454,693,167,148.03/768,283.16
  6. Step 6: Final answer
    x = 591,830.19

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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.