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Finding the Fourth Proportional to 549,787.80, 824,681.70 and 409,819.80

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Solution

The fourth proportional to 549,787.80, 824,681.70 and 409,819.80 is: 614,729.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,787.80 : 824,681.70 = 409,819.80 : x
  2. Step 2: Convert to fraction form
    549,787.80/824,681.70 = 409,819.80/x
  3. Step 3: Cross multiply
    549,787.80x = 824,681.70 × 409,819.80
  4. Step 4: Simplify right side
    549,787.80x = 337,970,889,357.66
  5. Step 5: Solve for x
    x = 337,970,889,357.66/549,787.80
  6. Step 6: Final answer
    x = 614,729.70

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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.