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Finding the Fourth Proportional to 553,325.41, 763,578.70 and 338,449.69

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Solution

The fourth proportional to 553,325.41, 763,578.70 and 338,449.69 is: 467,054.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,325.41 : 763,578.70 = 338,449.69 : x
  2. Step 2: Convert to fraction form
    553,325.41/763,578.70 = 338,449.69/x
  3. Step 3: Cross multiply
    553,325.41x = 763,578.70 × 338,449.69
  4. Step 4: Simplify right side
    553,325.41x = 258,432,976,214.55
  5. Step 5: Solve for x
    x = 258,432,976,214.55/553,325.41
  6. Step 6: Final answer
    x = 467,054.23

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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.