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Finding the Fourth Proportional to 549,607.80, 824,411.70 and 455,129.40

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Solution

The fourth proportional to 549,607.80, 824,411.70 and 455,129.40 is: 682,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,607.80 : 824,411.70 = 455,129.40 : x
  2. Step 2: Convert to fraction form
    549,607.80/824,411.70 = 455,129.40/x
  3. Step 3: Cross multiply
    549,607.80x = 824,411.70 × 455,129.40
  4. Step 4: Simplify right side
    549,607.80x = 375,214,002,373.98
  5. Step 5: Solve for x
    x = 375,214,002,373.98/549,607.80
  6. Step 6: Final answer
    x = 682,694.10

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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.