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Finding the Fourth Proportional to 658,995.15, 988,678.76 and 185,684.61

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Solution

The fourth proportional to 658,995.15, 988,678.76 and 185,684.61 is: 278,579.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,995.15 : 988,678.76 = 185,684.61 : x
  2. Step 2: Convert to fraction form
    658,995.15/988,678.76 = 185,684.61/x
  3. Step 3: Cross multiply
    658,995.15x = 988,678.76 × 185,684.61
  4. Step 4: Simplify right side
    658,995.15x = 183,582,429,037.46
  5. Step 5: Solve for x
    x = 183,582,429,037.46/658,995.15
  6. Step 6: Final answer
    x = 278,579.33

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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.