Home / 923,940.90-1,385,670.77-391,187.70

Finding the Fourth Proportional to 923,940.90, 1,385,670.77 and 391,187.70

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Solution

The fourth proportional to 923,940.90, 1,385,670.77 and 391,187.70 is: 586,679.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,940.90 : 1,385,670.77 = 391,187.70 : x
  2. Step 2: Convert to fraction form
    923,940.90/1,385,670.77 = 391,187.70/x
  3. Step 3: Cross multiply
    923,940.90x = 1,385,670.77 × 391,187.70
  4. Step 4: Simplify right side
    923,940.90x = 542,057,359,517.59
  5. Step 5: Solve for x
    x = 542,057,359,517.59/923,940.90
  6. Step 6: Final answer
    x = 586,679.69

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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.