Home / 654,421.02-902,732.15-392,708.61

Finding the Fourth Proportional to 654,421.02, 902,732.15 and 392,708.61

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Solution

The fourth proportional to 654,421.02, 902,732.15 and 392,708.61 is: 541,716.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,421.02 : 902,732.15 = 392,708.61 : x
  2. Step 2: Convert to fraction form
    654,421.02/902,732.15 = 392,708.61/x
  3. Step 3: Cross multiply
    654,421.02x = 902,732.15 × 392,708.61
  4. Step 4: Simplify right side
    654,421.02x = 354,510,685,865.27
  5. Step 5: Solve for x
    x = 354,510,685,865.27/654,421.02
  6. Step 6: Final answer
    x = 541,716.53

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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.