Home / 639,112.77-882,295.20-397,473.20

Finding the Fourth Proportional to 639,112.77, 882,295.20 and 397,473.20

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Solution

The fourth proportional to 639,112.77, 882,295.20 and 397,473.20 is: 548,711.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,112.77 : 882,295.20 = 397,473.20 : x
  2. Step 2: Convert to fraction form
    639,112.77/882,295.20 = 397,473.20/x
  3. Step 3: Cross multiply
    639,112.77x = 882,295.20 × 397,473.20
  4. Step 4: Simplify right side
    639,112.77x = 350,688,696,488.64
  5. Step 5: Solve for x
    x = 350,688,696,488.64/639,112.77
  6. Step 6: Final answer
    x = 548,711.77

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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.