Home / 923,121.50-1,273,909.29-520,713.50

Finding the Fourth Proportional to 923,121.50, 1,273,909.29 and 520,713.50

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Solution

The fourth proportional to 923,121.50, 1,273,909.29 and 520,713.50 is: 718,585.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    923,121.50 : 1,273,909.29 = 520,713.50 : x
  2. Step 2: Convert to fraction form
    923,121.50/1,273,909.29 = 520,713.50/x
  3. Step 3: Cross multiply
    923,121.50x = 1,273,909.29 × 520,713.50
  4. Step 4: Simplify right side
    923,121.50x = 663,341,765,078.42
  5. Step 5: Solve for x
    x = 663,341,765,078.42/923,121.50
  6. Step 6: Final answer
    x = 718,585.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.