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Finding the Fourth Proportional to 459,399.80, 688,817.46 and 178,589.72

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Solution

The fourth proportional to 459,399.80, 688,817.46 and 178,589.72 is: 267,774.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,399.80 : 688,817.46 = 178,589.72 : x
  2. Step 2: Convert to fraction form
    459,399.80/688,817.46 = 178,589.72/x
  3. Step 3: Cross multiply
    459,399.80x = 688,817.46 × 178,589.72
  4. Step 4: Simplify right side
    459,399.80x = 123,015,717,312.51
  5. Step 5: Solve for x
    x = 123,015,717,312.51/459,399.80
  6. Step 6: Final answer
    x = 267,774.86

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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.