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Finding the Fourth Proportional to 549,808.80, 824,713.20 and 409,840.80

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Solution

The fourth proportional to 549,808.80, 824,713.20 and 409,840.80 is: 614,761.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,808.80 : 824,713.20 = 409,840.80 : x
  2. Step 2: Convert to fraction form
    549,808.80/824,713.20 = 409,840.80/x
  3. Step 3: Cross multiply
    549,808.80x = 824,713.20 × 409,840.80
  4. Step 4: Simplify right side
    549,808.80x = 338,001,117,658.56
  5. Step 5: Solve for x
    x = 338,001,117,658.56/549,808.80
  6. Step 6: Final answer
    x = 614,761.20

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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.