Home / 691,981.80-1,037,972.70-193,345.80

Finding the Fourth Proportional to 691,981.80, 1,037,972.70 and 193,345.80

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Solution

The fourth proportional to 691,981.80, 1,037,972.70 and 193,345.80 is: 290,018.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,981.80 : 1,037,972.70 = 193,345.80 : x
  2. Step 2: Convert to fraction form
    691,981.80/1,037,972.70 = 193,345.80/x
  3. Step 3: Cross multiply
    691,981.80x = 1,037,972.70 × 193,345.80
  4. Step 4: Simplify right side
    691,981.80x = 200,687,662,059.66
  5. Step 5: Solve for x
    x = 200,687,662,059.66/691,981.80
  6. Step 6: Final answer
    x = 290,018.70

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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.