Home / 639,115.16-882,298.49-397,475.57

Finding the Fourth Proportional to 639,115.16, 882,298.49 and 397,475.57

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Solution

The fourth proportional to 639,115.16, 882,298.49 and 397,475.57 is: 548,715.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,115.16 : 882,298.49 = 397,475.57 : x
  2. Step 2: Convert to fraction form
    639,115.16/882,298.49 = 397,475.57/x
  3. Step 3: Cross multiply
    639,115.16x = 882,298.49 × 397,475.57
  4. Step 4: Simplify right side
    639,115.16x = 350,692,095,441.26
  5. Step 5: Solve for x
    x = 350,692,095,441.26/639,115.16
  6. Step 6: Final answer
    x = 548,715.04

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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.