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Finding the Fourth Proportional to 658,889.01, 908,915.75 and 400,844.61

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Solution

The fourth proportional to 658,889.01, 908,915.75 and 400,844.61 is: 552,951.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,889.01 : 908,915.75 = 400,844.61 : x
  2. Step 2: Convert to fraction form
    658,889.01/908,915.75 = 400,844.61/x
  3. Step 3: Cross multiply
    658,889.01x = 908,915.75 × 400,844.61
  4. Step 4: Simplify right side
    658,889.01x = 364,333,977,327.38
  5. Step 5: Solve for x
    x = 364,333,977,327.38/658,889.01
  6. Step 6: Final answer
    x = 552,951.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.