Home / 756,643.20-1,134,964.80-383,395.20

Finding the Fourth Proportional to 756,643.20, 1,134,964.80 and 383,395.20

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Solution

The fourth proportional to 756,643.20, 1,134,964.80 and 383,395.20 is: 575,092.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,643.20 : 1,134,964.80 = 383,395.20 : x
  2. Step 2: Convert to fraction form
    756,643.20/1,134,964.80 = 383,395.20/x
  3. Step 3: Cross multiply
    756,643.20x = 1,134,964.80 × 383,395.20
  4. Step 4: Simplify right side
    756,643.20x = 435,140,056,488.96
  5. Step 5: Solve for x
    x = 435,140,056,488.96/756,643.20
  6. Step 6: Final answer
    x = 575,092.80

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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.