Home / 656,878.20-985,706.10-432,886.20

Finding the Fourth Proportional to 656,878.20, 985,706.10 and 432,886.20

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Solution

The fourth proportional to 656,878.20, 985,706.10 and 432,886.20 is: 649,585.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,878.20 : 985,706.10 = 432,886.20 : x
  2. Step 2: Convert to fraction form
    656,878.20/985,706.10 = 432,886.20/x
  3. Step 3: Cross multiply
    656,878.20x = 985,706.10 × 432,886.20
  4. Step 4: Simplify right side
    656,878.20x = 426,698,567,945.82
  5. Step 5: Solve for x
    x = 426,698,567,945.82/656,878.20
  6. Step 6: Final answer
    x = 649,585.52

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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.