Home / 724,815.40-1,087,223.10-619,839.40

Finding the Fourth Proportional to 724,815.40, 1,087,223.10 and 619,839.40

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Solution

The fourth proportional to 724,815.40, 1,087,223.10 and 619,839.40 is: 929,759.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,815.40 : 1,087,223.10 = 619,839.40 : x
  2. Step 2: Convert to fraction form
    724,815.40/1,087,223.10 = 619,839.40/x
  3. Step 3: Cross multiply
    724,815.40x = 1,087,223.10 × 619,839.40
  4. Step 4: Simplify right side
    724,815.40x = 673,903,713,970.14
  5. Step 5: Solve for x
    x = 673,903,713,970.14/724,815.40
  6. Step 6: Final answer
    x = 929,759.10

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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.