Home / 815,842.20-1,224,200.70-342,575.40

Finding the Fourth Proportional to 815,842.20, 1,224,200.70 and 342,575.40

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Solution

The fourth proportional to 815,842.20, 1,224,200.70 and 342,575.40 is: 514,046.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,842.20 : 1,224,200.70 = 342,575.40 : x
  2. Step 2: Convert to fraction form
    815,842.20/1,224,200.70 = 342,575.40/x
  3. Step 3: Cross multiply
    815,842.20x = 1,224,200.70 × 342,575.40
  4. Step 4: Simplify right side
    815,842.20x = 419,381,044,482.78
  5. Step 5: Solve for x
    x = 419,381,044,482.78/815,842.20
  6. Step 6: Final answer
    x = 514,046.77

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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.