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Finding the Fourth Proportional to 549,740.20, 824,610.30 and 487,071.40

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Solution

The fourth proportional to 549,740.20, 824,610.30 and 487,071.40 is: 730,607.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,740.20 : 824,610.30 = 487,071.40 : x
  2. Step 2: Convert to fraction form
    549,740.20/824,610.30 = 487,071.40/x
  3. Step 3: Cross multiply
    549,740.20x = 824,610.30 × 487,071.40
  4. Step 4: Simplify right side
    549,740.20x = 401,644,093,275.42
  5. Step 5: Solve for x
    x = 401,644,093,275.42/549,740.20
  6. Step 6: Final answer
    x = 730,607.10

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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.