Home / 923,131.20-1,385,215.20-390,561.60

Finding the Fourth Proportional to 923,131.20, 1,385,215.20 and 390,561.60

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Solution

The fourth proportional to 923,131.20, 1,385,215.20 and 390,561.60 is: 586,061.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,131.20 : 1,385,215.20 = 390,561.60 : x
  2. Step 2: Convert to fraction form
    923,131.20/1,385,215.20 = 390,561.60/x
  3. Step 3: Cross multiply
    923,131.20x = 1,385,215.20 × 390,561.60
  4. Step 4: Simplify right side
    923,131.20x = 541,011,864,856.32
  5. Step 5: Solve for x
    x = 541,011,864,856.32/923,131.20
  6. Step 6: Final answer
    x = 586,061.73

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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.