Home / 668,857.18-1,003,390.10-219,475.76

Finding the Fourth Proportional to 668,857.18, 1,003,390.10 and 219,475.76

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Solution

The fourth proportional to 668,857.18, 1,003,390.10 and 219,475.76 is: 329,247.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,857.18 : 1,003,390.10 = 219,475.76 : x
  2. Step 2: Convert to fraction form
    668,857.18/1,003,390.10 = 219,475.76/x
  3. Step 3: Cross multiply
    668,857.18x = 1,003,390.10 × 219,475.76
  4. Step 4: Simplify right side
    668,857.18x = 220,219,807,831.14
  5. Step 5: Solve for x
    x = 220,219,807,831.14/668,857.18
  6. Step 6: Final answer
    x = 329,247.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.