Home / 691,065.70-1,036,598.55-392,130.14

Finding the Fourth Proportional to 691,065.70, 1,036,598.55 and 392,130.14

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Solution

The fourth proportional to 691,065.70, 1,036,598.55 and 392,130.14 is: 588,195.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,065.70 : 1,036,598.55 = 392,130.14 : x
  2. Step 2: Convert to fraction form
    691,065.70/1,036,598.55 = 392,130.14/x
  3. Step 3: Cross multiply
    691,065.70x = 1,036,598.55 × 392,130.14
  4. Step 4: Simplify right side
    691,065.70x = 406,481,534,535.30
  5. Step 5: Solve for x
    x = 406,481,534,535.30/691,065.70
  6. Step 6: Final answer
    x = 588,195.21

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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.