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Finding the Fourth Proportional to 553,378.22, 763,690.32 and 338,450.78

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Solution

The fourth proportional to 553,378.22, 763,690.32 and 338,450.78 is: 467,079.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,378.22 : 763,690.32 = 338,450.78 : x
  2. Step 2: Convert to fraction form
    553,378.22/763,690.32 = 338,450.78/x
  3. Step 3: Cross multiply
    553,378.22x = 763,690.32 × 338,450.78
  4. Step 4: Simplify right side
    553,378.22x = 258,471,584,482.45
  5. Step 5: Solve for x
    x = 258,471,584,482.45/553,378.22
  6. Step 6: Final answer
    x = 467,079.43

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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.