Home / 711,319.40-1,066,979.10-659,479.40

Finding the Fourth Proportional to 711,319.40, 1,066,979.10 and 659,479.40

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Solution

The fourth proportional to 711,319.40, 1,066,979.10 and 659,479.40 is: 989,219.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,319.40 : 1,066,979.10 = 659,479.40 : x
  2. Step 2: Convert to fraction form
    711,319.40/1,066,979.10 = 659,479.40/x
  3. Step 3: Cross multiply
    711,319.40x = 1,066,979.10 × 659,479.40
  4. Step 4: Simplify right side
    711,319.40x = 703,650,736,680.54
  5. Step 5: Solve for x
    x = 703,650,736,680.54/711,319.40
  6. Step 6: Final answer
    x = 989,219.10

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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.