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Finding the Fourth Proportional to 459,008.40, 688,512.60 and 407,832.60

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Solution

The fourth proportional to 459,008.40, 688,512.60 and 407,832.60 is: 611,748.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,008.40 : 688,512.60 = 407,832.60 : x
  2. Step 2: Convert to fraction form
    459,008.40/688,512.60 = 407,832.60/x
  3. Step 3: Cross multiply
    459,008.40x = 688,512.60 × 407,832.60
  4. Step 4: Simplify right side
    459,008.40x = 280,797,883,790.76
  5. Step 5: Solve for x
    x = 280,797,883,790.76/459,008.40
  6. Step 6: Final answer
    x = 611,748.90

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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.