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Finding the Fourth Proportional to 549,704.57, 758,614.05 and 307,989.12

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Solution

The fourth proportional to 549,704.57, 758,614.05 and 307,989.12 is: 425,037.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,704.57 : 758,614.05 = 307,989.12 : x
  2. Step 2: Convert to fraction form
    549,704.57/758,614.05 = 307,989.12/x
  3. Step 3: Cross multiply
    549,704.57x = 758,614.05 × 307,989.12
  4. Step 4: Simplify right side
    549,704.57x = 233,644,873,679.14
  5. Step 5: Solve for x
    x = 233,644,873,679.14/549,704.57
  6. Step 6: Final answer
    x = 425,037.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.