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Finding the Fourth Proportional to 452,757.60, 679,136.40 and 405,518.40

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Solution

The fourth proportional to 452,757.60, 679,136.40 and 405,518.40 is: 608,277.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,757.60 : 679,136.40 = 405,518.40 : x
  2. Step 2: Convert to fraction form
    452,757.60/679,136.40 = 405,518.40/x
  3. Step 3: Cross multiply
    452,757.60x = 679,136.40 × 405,518.40
  4. Step 4: Simplify right side
    452,757.60x = 275,402,306,309.76
  5. Step 5: Solve for x
    x = 275,402,306,309.76/452,757.60
  6. Step 6: Final answer
    x = 608,277.60

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Similar ratio
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1.5x scale

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.