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Finding the Fourth Proportional to 611,222.46, 917,437.08 and 458,889.71

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Solution

The fourth proportional to 611,222.46, 917,437.08 and 458,889.71 is: 688,787.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,222.46 : 917,437.08 = 458,889.71 : x
  2. Step 2: Convert to fraction form
    611,222.46/917,437.08 = 458,889.71/x
  3. Step 3: Cross multiply
    611,222.46x = 917,437.08 × 458,889.71
  4. Step 4: Simplify right side
    611,222.46x = 421,002,432,718.10
  5. Step 5: Solve for x
    x = 421,002,432,718.10/611,222.46
  6. Step 6: Final answer
    x = 688,787.57

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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.