Home / 756,127.90-1,042,995.18-449,999.20

Finding the Fourth Proportional to 756,127.90, 1,042,995.18 and 449,999.20

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Solution

The fourth proportional to 756,127.90, 1,042,995.18 and 449,999.20 is: 620,724.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,127.90 : 1,042,995.18 = 449,999.20 : x
  2. Step 2: Convert to fraction form
    756,127.90/1,042,995.18 = 449,999.20/x
  3. Step 3: Cross multiply
    756,127.90x = 1,042,995.18 × 449,999.20
  4. Step 4: Simplify right side
    756,127.90x = 469,346,996,603.86
  5. Step 5: Solve for x
    x = 469,346,996,603.86/756,127.90
  6. Step 6: Final answer
    x = 620,724.35

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.