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Finding the Fourth Proportional to 784,679.40, 1,177,019.10 and 607,532.40

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Solution

The fourth proportional to 784,679.40, 1,177,019.10 and 607,532.40 is: 911,298.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    784,679.40 : 1,177,019.10 = 607,532.40 : x
  2. Step 2: Convert to fraction form
    784,679.40/1,177,019.10 = 607,532.40/x
  3. Step 3: Cross multiply
    784,679.40x = 1,177,019.10 × 607,532.40
  4. Step 4: Simplify right side
    784,679.40x = 715,077,238,668.84
  5. Step 5: Solve for x
    x = 715,077,238,668.84/784,679.40
  6. Step 6: Final answer
    x = 911,298.60

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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.