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Finding the Fourth Proportional to 658,974.64, 909,399 and 372,477.64

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Solution

The fourth proportional to 658,974.64, 909,399 and 372,477.64 is: 514,027.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,974.64 : 909,399 = 372,477.64 : x
  2. Step 2: Convert to fraction form
    658,974.64/909,399 = 372,477.64/x
  3. Step 3: Cross multiply
    658,974.64x = 909,399 × 372,477.64
  4. Step 4: Simplify right side
    658,974.64x = 338,730,793,338.36
  5. Step 5: Solve for x
    x = 338,730,793,338.36/658,974.64
  6. Step 6: Final answer
    x = 514,027.05

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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.