Home / 661,640.20-992,460.30-451,688.20

Finding the Fourth Proportional to 661,640.20, 992,460.30 and 451,688.20

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Solution

The fourth proportional to 661,640.20, 992,460.30 and 451,688.20 is: 677,532.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,640.20 : 992,460.30 = 451,688.20 : x
  2. Step 2: Convert to fraction form
    661,640.20/992,460.30 = 451,688.20/x
  3. Step 3: Cross multiply
    661,640.20x = 992,460.30 × 451,688.20
  4. Step 4: Simplify right side
    661,640.20x = 448,282,606,478.46
  5. Step 5: Solve for x
    x = 448,282,606,478.46/661,640.20
  6. Step 6: Final answer
    x = 677,532.30

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Half scale
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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.