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Finding the Fourth Proportional to 611,226.46, 917,443.08 and 458,893.71

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Solution

The fourth proportional to 611,226.46, 917,443.08 and 458,893.71 is: 688,793.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,226.46 : 917,443.08 = 458,893.71 : x
  2. Step 2: Convert to fraction form
    611,226.46/917,443.08 = 458,893.71/x
  3. Step 3: Cross multiply
    611,226.46x = 917,443.08 × 458,893.71
  4. Step 4: Simplify right side
    611,226.46x = 421,008,858,695.03
  5. Step 5: Solve for x
    x = 421,008,858,695.03/611,226.46
  6. Step 6: Final answer
    x = 688,793.58

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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.