Home / 856,443.42-1,284,685.92-287,832.78

Finding the Fourth Proportional to 856,443.42, 1,284,685.92 and 287,832.78

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Solution

The fourth proportional to 856,443.42, 1,284,685.92 and 287,832.78 is: 431,756.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,443.42 : 1,284,685.92 = 287,832.78 : x
  2. Step 2: Convert to fraction form
    856,443.42/1,284,685.92 = 287,832.78/x
  3. Step 3: Cross multiply
    856,443.42x = 1,284,685.92 × 287,832.78
  4. Step 4: Simplify right side
    856,443.42x = 369,774,719,780.46
  5. Step 5: Solve for x
    x = 369,774,719,780.46/856,443.42
  6. Step 6: Final answer
    x = 431,756.16

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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.