Home / 711,365.20-1,068,276.60-379,589.20

Finding the Fourth Proportional to 711,365.20, 1,068,276.60 and 379,589.20

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Solution

The fourth proportional to 711,365.20, 1,068,276.60 and 379,589.20 is: 570,039.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,365.20 : 1,068,276.60 = 379,589.20 : x
  2. Step 2: Convert to fraction form
    711,365.20/1,068,276.60 = 379,589.20/x
  3. Step 3: Cross multiply
    711,365.20x = 1,068,276.60 × 379,589.20
  4. Step 4: Simplify right side
    711,365.20x = 405,506,259,972.72
  5. Step 5: Solve for x
    x = 405,506,259,972.72/711,365.20
  6. Step 6: Final answer
    x = 570,039.50

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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.