Home / 645,336.80-968,005.20-577,685.60

Finding the Fourth Proportional to 645,336.80, 968,005.20 and 577,685.60

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Solution

The fourth proportional to 645,336.80, 968,005.20 and 577,685.60 is: 866,528.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,336.80 : 968,005.20 = 577,685.60 : x
  2. Step 2: Convert to fraction form
    645,336.80/968,005.20 = 577,685.60/x
  3. Step 3: Cross multiply
    645,336.80x = 968,005.20 × 577,685.60
  4. Step 4: Simplify right side
    645,336.80x = 559,202,664,765.12
  5. Step 5: Solve for x
    x = 559,202,664,765.12/645,336.80
  6. Step 6: Final answer
    x = 866,528.40

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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.