Home / 621,766.75-858,038.13-353,494.75

Finding the Fourth Proportional to 621,766.75, 858,038.13 and 353,494.75

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Solution

The fourth proportional to 621,766.75, 858,038.13 and 353,494.75 is: 487,822.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,766.75 : 858,038.13 = 353,494.75 : x
  2. Step 2: Convert to fraction form
    621,766.75/858,038.13 = 353,494.75/x
  3. Step 3: Cross multiply
    621,766.75x = 858,038.13 × 353,494.75
  4. Step 4: Simplify right side
    621,766.75x = 303,311,974,254.82
  5. Step 5: Solve for x
    x = 303,311,974,254.82/621,766.75
  6. Step 6: Final answer
    x = 487,822.76

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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.