Home / 423,620.40-635,518.10-124,110.76

Finding the Fourth Proportional to 423,620.40, 635,518.10 and 124,110.76

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Solution

The fourth proportional to 423,620.40, 635,518.10 and 124,110.76 is: 186,191.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,620.40 : 635,518.10 = 124,110.76 : x
  2. Step 2: Convert to fraction form
    423,620.40/635,518.10 = 124,110.76/x
  3. Step 3: Cross multiply
    423,620.40x = 635,518.10 × 124,110.76
  4. Step 4: Simplify right side
    423,620.40x = 78,874,634,384.76
  5. Step 5: Solve for x
    x = 78,874,634,384.76/423,620.40
  6. Step 6: Final answer
    x = 186,191.78

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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.