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Finding the Fourth Proportional to 553,447.44, 763,814.88 and 338,730.48

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Solution

The fourth proportional to 553,447.44, 763,814.88 and 338,730.48 is: 467,483.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,447.44 : 763,814.88 = 338,730.48 : x
  2. Step 2: Convert to fraction form
    553,447.44/763,814.88 = 338,730.48/x
  3. Step 3: Cross multiply
    553,447.44x = 763,814.88 × 338,730.48
  4. Step 4: Simplify right side
    553,447.44x = 258,727,380,933.54
  5. Step 5: Solve for x
    x = 258,727,380,933.54/553,447.44
  6. Step 6: Final answer
    x = 467,483.20

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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.