Home / 786,643.20-1,179,964.80-725,817.60

Finding the Fourth Proportional to 786,643.20, 1,179,964.80 and 725,817.60

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Solution

The fourth proportional to 786,643.20, 1,179,964.80 and 725,817.60 is: 1,088,726.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,643.20 : 1,179,964.80 = 725,817.60 : x
  2. Step 2: Convert to fraction form
    786,643.20/1,179,964.80 = 725,817.60/x
  3. Step 3: Cross multiply
    786,643.20x = 1,179,964.80 × 725,817.60
  4. Step 4: Simplify right side
    786,643.20x = 856,439,219,220.48
  5. Step 5: Solve for x
    x = 856,439,219,220.48/786,643.20
  6. Step 6: Final answer
    x = 1,088,726.40

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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.