Home / 709,138.80-1,063,905.30-393,817.14

Finding the Fourth Proportional to 709,138.80, 1,063,905.30 and 393,817.14

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Solution

The fourth proportional to 709,138.80, 1,063,905.30 and 393,817.14 is: 590,835.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    709,138.80 : 1,063,905.30 = 393,817.14 : x
  2. Step 2: Convert to fraction form
    709,138.80/1,063,905.30 = 393,817.14/x
  3. Step 3: Cross multiply
    709,138.80x = 1,063,905.30 × 393,817.14
  4. Step 4: Simplify right side
    709,138.80x = 418,984,142,476.84
  5. Step 5: Solve for x
    x = 418,984,142,476.84/709,138.80
  6. Step 6: Final answer
    x = 590,835.17

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Double scale
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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.