Home / 784,825.40-1,177,238.10-385,722.20

Finding the Fourth Proportional to 784,825.40, 1,177,238.10 and 385,722.20

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Solution

The fourth proportional to 784,825.40, 1,177,238.10 and 385,722.20 is: 578,583.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,825.40 : 1,177,238.10 = 385,722.20 : x
  2. Step 2: Convert to fraction form
    784,825.40/1,177,238.10 = 385,722.20/x
  3. Step 3: Cross multiply
    784,825.40x = 1,177,238.10 × 385,722.20
  4. Step 4: Simplify right side
    784,825.40x = 454,086,869,855.82
  5. Step 5: Solve for x
    x = 454,086,869,855.82/784,825.40
  6. Step 6: Final answer
    x = 578,583.30

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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.