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Finding the Fourth Proportional to 453,042.60, 679,782.60 and 319,635.60

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Solution

The fourth proportional to 453,042.60, 679,782.60 and 319,635.60 is: 479,607.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,042.60 : 679,782.60 = 319,635.60 : x
  2. Step 2: Convert to fraction form
    453,042.60/679,782.60 = 319,635.60/x
  3. Step 3: Cross multiply
    453,042.60x = 679,782.60 × 319,635.60
  4. Step 4: Simplify right side
    453,042.60x = 217,282,719,220.56
  5. Step 5: Solve for x
    x = 217,282,719,220.56/453,042.60
  6. Step 6: Final answer
    x = 479,607.70

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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.