Home / 804,905.80-1,207,358.70-272,444.20

Finding the Fourth Proportional to 804,905.80, 1,207,358.70 and 272,444.20

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Solution

The fourth proportional to 804,905.80, 1,207,358.70 and 272,444.20 is: 408,666.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,905.80 : 1,207,358.70 = 272,444.20 : x
  2. Step 2: Convert to fraction form
    804,905.80/1,207,358.70 = 272,444.20/x
  3. Step 3: Cross multiply
    804,905.80x = 1,207,358.70 × 272,444.20
  4. Step 4: Simplify right side
    804,905.80x = 328,937,875,134.54
  5. Step 5: Solve for x
    x = 328,937,875,134.54/804,905.80
  6. Step 6: Final answer
    x = 408,666.30

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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.