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Finding the Fourth Proportional to 459,318.46, 688,990.65 and 126,894.46

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Solution

The fourth proportional to 459,318.46, 688,990.65 and 126,894.46 is: 190,345.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,318.46 : 688,990.65 = 126,894.46 : x
  2. Step 2: Convert to fraction form
    459,318.46/688,990.65 = 126,894.46/x
  3. Step 3: Cross multiply
    459,318.46x = 688,990.65 × 126,894.46
  4. Step 4: Simplify right side
    459,318.46x = 87,429,096,476.80
  5. Step 5: Solve for x
    x = 87,429,096,476.80/459,318.46
  6. Step 6: Final answer
    x = 190,345.27

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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.