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Finding the Fourth Proportional to 553,451.94, 763,821.10 and 338,734.98

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Solution

The fourth proportional to 553,451.94, 763,821.10 and 338,734.98 is: 467,489.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,451.94 : 763,821.10 = 338,734.98 : x
  2. Step 2: Convert to fraction form
    553,451.94/763,821.10 = 338,734.98/x
  3. Step 3: Cross multiply
    553,451.94x = 763,821.10 × 338,734.98
  4. Step 4: Simplify right side
    553,451.94x = 258,732,925,032.08
  5. Step 5: Solve for x
    x = 258,732,925,032.08/553,451.94
  6. Step 6: Final answer
    x = 467,489.42

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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.