Home / 646,821.20-970,404.60-577,182.80

Finding the Fourth Proportional to 646,821.20, 970,404.60 and 577,182.80

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Solution

The fourth proportional to 646,821.20, 970,404.60 and 577,182.80 is: 865,928.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,821.20 : 970,404.60 = 577,182.80 : x
  2. Step 2: Convert to fraction form
    646,821.20/970,404.60 = 577,182.80/x
  3. Step 3: Cross multiply
    646,821.20x = 970,404.60 × 577,182.80
  4. Step 4: Simplify right side
    646,821.20x = 560,100,844,160.88
  5. Step 5: Solve for x
    x = 560,100,844,160.88/646,821.20
  6. Step 6: Final answer
    x = 865,928.40

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Double scale
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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.