Home / 764,121.40-1,146,182.10-688,013.80

Finding the Fourth Proportional to 764,121.40, 1,146,182.10 and 688,013.80

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Solution

The fourth proportional to 764,121.40, 1,146,182.10 and 688,013.80 is: 1,032,020.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,121.40 : 1,146,182.10 = 688,013.80 : x
  2. Step 2: Convert to fraction form
    764,121.40/1,146,182.10 = 688,013.80/x
  3. Step 3: Cross multiply
    764,121.40x = 1,146,182.10 × 688,013.80
  4. Step 4: Simplify right side
    764,121.40x = 788,589,102,112.98
  5. Step 5: Solve for x
    x = 788,589,102,112.98/764,121.40
  6. Step 6: Final answer
    x = 1,032,020.70

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1.5x scale

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.