Home / 827,095.20-1,240,642.80-328,459.20

Finding the Fourth Proportional to 827,095.20, 1,240,642.80 and 328,459.20

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Solution

The fourth proportional to 827,095.20, 1,240,642.80 and 328,459.20 is: 492,688.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,095.20 : 1,240,642.80 = 328,459.20 : x
  2. Step 2: Convert to fraction form
    827,095.20/1,240,642.80 = 328,459.20/x
  3. Step 3: Cross multiply
    827,095.20x = 1,240,642.80 × 328,459.20
  4. Step 4: Simplify right side
    827,095.20x = 407,500,541,573.76
  5. Step 5: Solve for x
    x = 407,500,541,573.76/827,095.20
  6. Step 6: Final answer
    x = 492,688.80

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Similar ratio
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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.