Home / 674,490.12-1,011,605.40-314,561.76

Finding the Fourth Proportional to 674,490.12, 1,011,605.40 and 314,561.76

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Solution

The fourth proportional to 674,490.12, 1,011,605.40 and 314,561.76 is: 471,782.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,490.12 : 1,011,605.40 = 314,561.76 : x
  2. Step 2: Convert to fraction form
    674,490.12/1,011,605.40 = 314,561.76/x
  3. Step 3: Cross multiply
    674,490.12x = 1,011,605.40 × 314,561.76
  4. Step 4: Simplify right side
    674,490.12x = 318,212,375,049.50
  5. Step 5: Solve for x
    x = 318,212,375,049.50/674,490.12
  6. Step 6: Final answer
    x = 471,782.11

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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.