Home / 908,663.88-1,253,964.71-500,780.40

Finding the Fourth Proportional to 908,663.88, 1,253,964.71 and 500,780.40

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Solution

The fourth proportional to 908,663.88, 1,253,964.71 and 500,780.40 is: 691,081.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,663.88 : 1,253,964.71 = 500,780.40 : x
  2. Step 2: Convert to fraction form
    908,663.88/1,253,964.71 = 500,780.40/x
  3. Step 3: Cross multiply
    908,663.88x = 1,253,964.71 × 500,780.40
  4. Step 4: Simplify right side
    908,663.88x = 627,960,950,942.65
  5. Step 5: Solve for x
    x = 627,960,950,942.65/908,663.88
  6. Step 6: Final answer
    x = 691,081.67

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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.