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Finding the Fourth Proportional to 768,281.60, 1,060,287.36 and 424,183.88

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Solution

The fourth proportional to 768,281.60, 1,060,287.36 and 424,183.88 is: 585,406.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,281.60 : 1,060,287.36 = 424,183.88 : x
  2. Step 2: Convert to fraction form
    768,281.60/1,060,287.36 = 424,183.88/x
  3. Step 3: Cross multiply
    768,281.60x = 1,060,287.36 × 424,183.88
  4. Step 4: Simplify right side
    768,281.60x = 449,756,806,279.76
  5. Step 5: Solve for x
    x = 449,756,806,279.76/768,281.60
  6. Step 6: Final answer
    x = 585,406.19

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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.