Home / 654,424.02-902,736.29-392,711.61

Finding the Fourth Proportional to 654,424.02, 902,736.29 and 392,711.61

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Solution

The fourth proportional to 654,424.02, 902,736.29 and 392,711.61 is: 541,720.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,424.02 : 902,736.29 = 392,711.61 : x
  2. Step 2: Convert to fraction form
    654,424.02/902,736.29 = 392,711.61/x
  3. Step 3: Cross multiply
    654,424.02x = 902,736.29 × 392,711.61
  4. Step 4: Simplify right side
    654,424.02x = 354,515,019,887.77
  5. Step 5: Solve for x
    x = 354,515,019,887.77/654,424.02
  6. Step 6: Final answer
    x = 541,720.67

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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.