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Finding the Fourth Proportional to 390,694.55, 588,970.22 and 364,654.53

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Solution

The fourth proportional to 390,694.55, 588,970.22 and 364,654.53 is: 549,715.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,694.55 : 588,970.22 = 364,654.53 : x
  2. Step 2: Convert to fraction form
    390,694.55/588,970.22 = 364,654.53/x
  3. Step 3: Cross multiply
    390,694.55x = 588,970.22 × 364,654.53
  4. Step 4: Simplify right side
    390,694.55x = 214,770,656,934.82
  5. Step 5: Solve for x
    x = 214,770,656,934.82/390,694.55
  6. Step 6: Final answer
    x = 549,715.01

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.