Home / 1,120,085.72-1,680,688.92-512,872.68

Finding the Fourth Proportional to 1,120,085.72, 1,680,688.92 and 512,872.68

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Solution

The fourth proportional to 1,120,085.72, 1,680,688.92 and 512,872.68 is: 769,565.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,085.72 : 1,680,688.92 = 512,872.68 : x
  2. Step 2: Convert to fraction form
    1,120,085.72/1,680,688.92 = 512,872.68/x
  3. Step 3: Cross multiply
    1,120,085.72x = 1,680,688.92 × 512,872.68
  4. Step 4: Simplify right side
    1,120,085.72x = 861,979,430,646.71
  5. Step 5: Solve for x
    x = 861,979,430,646.71/1,120,085.72
  6. Step 6: Final answer
    x = 769,565.59

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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.