Home / 812,055.16-1,120,607.46-449,479.72

Finding the Fourth Proportional to 812,055.16, 1,120,607.46 and 449,479.72

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Solution

The fourth proportional to 812,055.16, 1,120,607.46 and 449,479.72 is: 620,266.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,055.16 : 1,120,607.46 = 449,479.72 : x
  2. Step 2: Convert to fraction form
    812,055.16/1,120,607.46 = 449,479.72/x
  3. Step 3: Cross multiply
    812,055.16x = 1,120,607.46 × 449,479.72
  4. Step 4: Simplify right side
    812,055.16x = 503,690,327,350.71
  5. Step 5: Solve for x
    x = 503,690,327,350.71/812,055.16
  6. Step 6: Final answer
    x = 620,266.15

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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.