Home / 711,643.20-1,067,464.80-291,220.80

Finding the Fourth Proportional to 711,643.20, 1,067,464.80 and 291,220.80

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Solution

The fourth proportional to 711,643.20, 1,067,464.80 and 291,220.80 is: 436,831.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,643.20 : 1,067,464.80 = 291,220.80 : x
  2. Step 2: Convert to fraction form
    711,643.20/1,067,464.80 = 291,220.80/x
  3. Step 3: Cross multiply
    711,643.20x = 1,067,464.80 × 291,220.80
  4. Step 4: Simplify right side
    711,643.20x = 310,867,953,027.84
  5. Step 5: Solve for x
    x = 310,867,953,027.84/711,643.20
  6. Step 6: Final answer
    x = 436,831.20

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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.