Home / 784,675.40-1,079,454.12-687,441.32

Finding the Fourth Proportional to 784,675.40, 1,079,454.12 and 687,441.32

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Solution

The fourth proportional to 784,675.40, 1,079,454.12 and 687,441.32 is: 945,692.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,675.40 : 1,079,454.12 = 687,441.32 : x
  2. Step 2: Convert to fraction form
    784,675.40/1,079,454.12 = 687,441.32/x
  3. Step 3: Cross multiply
    784,675.40x = 1,079,454.12 × 687,441.32
  4. Step 4: Simplify right side
    784,675.40x = 742,061,365,132.24
  5. Step 5: Solve for x
    x = 742,061,365,132.24/784,675.40
  6. Step 6: Final answer
    x = 945,692.15

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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.