Home / 812,064.16-1,120,619.84-449,488.72

Finding the Fourth Proportional to 812,064.16, 1,120,619.84 and 449,488.72

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Solution

The fourth proportional to 812,064.16, 1,120,619.84 and 449,488.72 is: 620,278.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,064.16 : 1,120,619.84 = 449,488.72 : x
  2. Step 2: Convert to fraction form
    812,064.16/1,120,619.84 = 449,488.72/x
  3. Step 3: Cross multiply
    812,064.16x = 1,120,619.84 × 449,488.72
  4. Step 4: Simplify right side
    812,064.16x = 503,705,977,488.21
  5. Step 5: Solve for x
    x = 503,705,977,488.21/812,064.16
  6. Step 6: Final answer
    x = 620,278.55

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1.5x scale

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.