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Finding the Fourth Proportional to 459,279.60, 689,437.80 and 354,562.80

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Solution

The fourth proportional to 459,279.60, 689,437.80 and 354,562.80 is: 532,244.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,279.60 : 689,437.80 = 354,562.80 : x
  2. Step 2: Convert to fraction form
    459,279.60/689,437.80 = 354,562.80/x
  3. Step 3: Cross multiply
    459,279.60x = 689,437.80 × 354,562.80
  4. Step 4: Simplify right side
    459,279.60x = 244,448,996,793.84
  5. Step 5: Solve for x
    x = 244,448,996,793.84/459,279.60
  6. Step 6: Final answer
    x = 532,244.40

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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.