Home / 1,245,688.65-1,719,050.28-672,728.78

Finding the Fourth Proportional to 1,245,688.65, 1,719,050.28 and 672,728.78

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Solution

The fourth proportional to 1,245,688.65, 1,719,050.28 and 672,728.78 is: 928,365.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,688.65 : 1,719,050.28 = 672,728.78 : x
  2. Step 2: Convert to fraction form
    1,245,688.65/1,719,050.28 = 672,728.78/x
  3. Step 3: Cross multiply
    1,245,688.65x = 1,719,050.28 × 672,728.78
  4. Step 4: Simplify right side
    1,245,688.65x = 1,156,454,589,027.81
  5. Step 5: Solve for x
    x = 1,156,454,589,027.81/1,245,688.65
  6. Step 6: Final answer
    x = 928,365.68

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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.