Home / 621,769.20-858,041.49-353,497.20

Finding the Fourth Proportional to 621,769.20, 858,041.49 and 353,497.20

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Solution

The fourth proportional to 621,769.20, 858,041.49 and 353,497.20 is: 487,826.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,769.20 : 858,041.49 = 353,497.20 : x
  2. Step 2: Convert to fraction form
    621,769.20/858,041.49 = 353,497.20/x
  3. Step 3: Cross multiply
    621,769.20x = 858,041.49 × 353,497.20
  4. Step 4: Simplify right side
    621,769.20x = 303,315,264,198.83
  5. Step 5: Solve for x
    x = 303,315,264,198.83/621,769.20
  6. Step 6: Final answer
    x = 487,826.13

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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.