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Finding the Fourth Proportional to 391,036.60, 587,721.30 and 384,038.20

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Solution

The fourth proportional to 391,036.60, 587,721.30 and 384,038.20 is: 577,202.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,036.60 : 587,721.30 = 384,038.20 : x
  2. Step 2: Convert to fraction form
    391,036.60/587,721.30 = 384,038.20/x
  3. Step 3: Cross multiply
    391,036.60x = 587,721.30 × 384,038.20
  4. Step 4: Simplify right side
    391,036.60x = 225,707,430,153.66
  5. Step 5: Solve for x
    x = 225,707,430,153.66/391,036.60
  6. Step 6: Final answer
    x = 577,202.82

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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.