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Finding the Fourth Proportional to 396,773.10, 595,159.65 and 390,868.20

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Solution

The fourth proportional to 396,773.10, 595,159.65 and 390,868.20 is: 586,302.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    396,773.10 : 595,159.65 = 390,868.20 : x
  2. Step 2: Convert to fraction form
    396,773.10/595,159.65 = 390,868.20/x
  3. Step 3: Cross multiply
    396,773.10x = 595,159.65 × 390,868.20
  4. Step 4: Simplify right side
    396,773.10x = 232,628,981,108.13
  5. Step 5: Solve for x
    x = 232,628,981,108.13/396,773.10
  6. Step 6: Final answer
    x = 586,302.30

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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.