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Finding the Fourth Proportional to 549,665.80, 824,498.70 and 455,187.40

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Solution

The fourth proportional to 549,665.80, 824,498.70 and 455,187.40 is: 682,781.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,665.80 : 824,498.70 = 455,187.40 : x
  2. Step 2: Convert to fraction form
    549,665.80/824,498.70 = 455,187.40/x
  3. Step 3: Cross multiply
    549,665.80x = 824,498.70 × 455,187.40
  4. Step 4: Simplify right side
    549,665.80x = 375,301,419,556.38
  5. Step 5: Solve for x
    x = 375,301,419,556.38/549,665.80
  6. Step 6: Final answer
    x = 682,781.10

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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.