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Finding the Fourth Proportional to 452,679.60, 679,089.84 and 137,061.36

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Solution

The fourth proportional to 452,679.60, 679,089.84 and 137,061.36 is: 205,613.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,679.60 : 679,089.84 = 137,061.36 : x
  2. Step 2: Convert to fraction form
    452,679.60/679,089.84 = 137,061.36/x
  3. Step 3: Cross multiply
    452,679.60x = 679,089.84 × 137,061.36
  4. Step 4: Simplify right side
    452,679.60x = 93,076,977,032.58
  5. Step 5: Solve for x
    x = 93,076,977,032.58/452,679.60
  6. Step 6: Final answer
    x = 205,613.37

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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.