Home / 827,146.20-1,240,719.30-328,510.20

Finding the Fourth Proportional to 827,146.20, 1,240,719.30 and 328,510.20

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Solution

The fourth proportional to 827,146.20, 1,240,719.30 and 328,510.20 is: 492,765.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,146.20 : 1,240,719.30 = 328,510.20 : x
  2. Step 2: Convert to fraction form
    827,146.20/1,240,719.30 = 328,510.20/x
  3. Step 3: Cross multiply
    827,146.20x = 1,240,719.30 × 328,510.20
  4. Step 4: Simplify right side
    827,146.20x = 407,588,945,386.86
  5. Step 5: Solve for x
    x = 407,588,945,386.86/827,146.20
  6. Step 6: Final answer
    x = 492,765.30

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Half scale
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Double scale
Find fourth proportional to 827,147.20, 1,240,720.80 and 328,511.20
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.