Home / 784,574.40-1,079,314.80-687,340.32

Finding the Fourth Proportional to 784,574.40, 1,079,314.80 and 687,340.32

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Solution

The fourth proportional to 784,574.40, 1,079,314.80 and 687,340.32 is: 945,552.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,574.40 : 1,079,314.80 = 687,340.32 : x
  2. Step 2: Convert to fraction form
    784,574.40/1,079,314.80 = 687,340.32/x
  3. Step 3: Cross multiply
    784,574.40x = 1,079,314.80 × 687,340.32
  4. Step 4: Simplify right side
    784,574.40x = 741,856,580,012.74
  5. Step 5: Solve for x
    x = 741,856,580,012.74/784,574.40
  6. Step 6: Final answer
    x = 945,552.88

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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.