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Finding the Fourth Proportional to 560,845.68, 840,568.68 and 280,443.12

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Solution

The fourth proportional to 560,845.68, 840,568.68 and 280,443.12 is: 420,314.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,845.68 : 840,568.68 = 280,443.12 : x
  2. Step 2: Convert to fraction form
    560,845.68/840,568.68 = 280,443.12/x
  3. Step 3: Cross multiply
    560,845.68x = 840,568.68 × 280,443.12
  4. Step 4: Simplify right side
    560,845.68x = 235,731,703,193.48
  5. Step 5: Solve for x
    x = 235,731,703,193.48/560,845.68
  6. Step 6: Final answer
    x = 420,314.73

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1.5x scale

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.