Home / 656,890.65-985,335.98-656,890.65

Finding the Fourth Proportional to 656,890.65, 985,335.98 and 656,890.65

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Solution

The fourth proportional to 656,890.65, 985,335.98 and 656,890.65 is: 985,335.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,890.65 : 985,335.98 = 656,890.65 : x
  2. Step 2: Convert to fraction form
    656,890.65/985,335.98 = 656,890.65/x
  3. Step 3: Cross multiply
    656,890.65x = 985,335.98 × 656,890.65
  4. Step 4: Simplify right side
    656,890.65x = 647,257,989,086.13
  5. Step 5: Solve for x
    x = 647,257,989,086.13/656,890.65
  6. Step 6: Final answer
    x = 985,335.98

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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.