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Finding the Fourth Proportional to 585,835.20, 876,679.20 and 399,211.20

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Solution

The fourth proportional to 585,835.20, 876,679.20 and 399,211.20 is: 597,403.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,835.20 : 876,679.20 = 399,211.20 : x
  2. Step 2: Convert to fraction form
    585,835.20/876,679.20 = 399,211.20/x
  3. Step 3: Cross multiply
    585,835.20x = 876,679.20 × 399,211.20
  4. Step 4: Simplify right side
    585,835.20x = 349,980,155,447.04
  5. Step 5: Solve for x
    x = 349,980,155,447.04/585,835.20
  6. Step 6: Final answer
    x = 597,403.77

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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.