Home / 815,176.20-1,223,201.70-341,909.40

Finding the Fourth Proportional to 815,176.20, 1,223,201.70 and 341,909.40

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Solution

The fourth proportional to 815,176.20, 1,223,201.70 and 341,909.40 is: 513,047.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,176.20 : 1,223,201.70 = 341,909.40 : x
  2. Step 2: Convert to fraction form
    815,176.20/1,223,201.70 = 341,909.40/x
  3. Step 3: Cross multiply
    815,176.20x = 1,223,201.70 × 341,909.40
  4. Step 4: Simplify right side
    815,176.20x = 418,224,159,325.98
  5. Step 5: Solve for x
    x = 418,224,159,325.98/815,176.20
  6. Step 6: Final answer
    x = 513,047.56

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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.