Home / 672,809.76-1,009,042.56-199,384.20

Finding the Fourth Proportional to 672,809.76, 1,009,042.56 and 199,384.20

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Solution

The fourth proportional to 672,809.76, 1,009,042.56 and 199,384.20 is: 299,025.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,809.76 : 1,009,042.56 = 199,384.20 : x
  2. Step 2: Convert to fraction form
    672,809.76/1,009,042.56 = 199,384.20/x
  3. Step 3: Cross multiply
    672,809.76x = 1,009,042.56 × 199,384.20
  4. Step 4: Simplify right side
    672,809.76x = 201,187,143,591.55
  5. Step 5: Solve for x
    x = 201,187,143,591.55/672,809.76
  6. Step 6: Final answer
    x = 299,025.30

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Double scale
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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.