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Finding the Fourth Proportional to 549,793.43, 758,265.11 and 386,988.89

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Solution

The fourth proportional to 549,793.43, 758,265.11 and 386,988.89 is: 533,728.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,793.43 : 758,265.11 = 386,988.89 : x
  2. Step 2: Convert to fraction form
    549,793.43/758,265.11 = 386,988.89/x
  3. Step 3: Cross multiply
    549,793.43x = 758,265.11 × 386,988.89
  4. Step 4: Simplify right side
    549,793.43x = 293,440,167,518.36
  5. Step 5: Solve for x
    x = 293,440,167,518.36/549,793.43
  6. Step 6: Final answer
    x = 533,728.03

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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.