Home / 827,101.20-1,240,651.80-328,465.20

Finding the Fourth Proportional to 827,101.20, 1,240,651.80 and 328,465.20

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Solution

The fourth proportional to 827,101.20, 1,240,651.80 and 328,465.20 is: 492,697.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,101.20 : 1,240,651.80 = 328,465.20 : x
  2. Step 2: Convert to fraction form
    827,101.20/1,240,651.80 = 328,465.20/x
  3. Step 3: Cross multiply
    827,101.20x = 1,240,651.80 × 328,465.20
  4. Step 4: Simplify right side
    827,101.20x = 407,510,941,617.36
  5. Step 5: Solve for x
    x = 407,510,941,617.36/827,101.20
  6. Step 6: Final answer
    x = 492,697.80

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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.