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Finding the Fourth Proportional to 658,652.51, 908,917.20 and 372,166.45

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Solution

The fourth proportional to 658,652.51, 908,917.20 and 372,166.45 is: 513,576.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,652.51 : 908,917.20 = 372,166.45 : x
  2. Step 2: Convert to fraction form
    658,652.51/908,917.20 = 372,166.45/x
  3. Step 3: Cross multiply
    658,652.51x = 908,917.20 × 372,166.45
  4. Step 4: Simplify right side
    658,652.51x = 338,268,485,395.65
  5. Step 5: Solve for x
    x = 338,268,485,395.65/658,652.51
  6. Step 6: Final answer
    x = 513,576.55

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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.