Home / 827,139.20-1,240,708.80-328,503.20

Finding the Fourth Proportional to 827,139.20, 1,240,708.80 and 328,503.20

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Solution

The fourth proportional to 827,139.20, 1,240,708.80 and 328,503.20 is: 492,754.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,139.20 : 1,240,708.80 = 328,503.20 : x
  2. Step 2: Convert to fraction form
    827,139.20/1,240,708.80 = 328,503.20/x
  3. Step 3: Cross multiply
    827,139.20x = 1,240,708.80 × 328,503.20
  4. Step 4: Simplify right side
    827,139.20x = 407,576,811,068.16
  5. Step 5: Solve for x
    x = 407,576,811,068.16/827,139.20
  6. Step 6: Final answer
    x = 492,754.80

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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.