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Finding the Fourth Proportional to 553,712.40, 764,179.80 and 338,994.36

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Solution

The fourth proportional to 553,712.40, 764,179.80 and 338,994.36 is: 467,846.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,712.40 : 764,179.80 = 338,994.36 : x
  2. Step 2: Convert to fraction form
    553,712.40/764,179.80 = 338,994.36/x
  3. Step 3: Cross multiply
    553,712.40x = 764,179.80 × 338,994.36
  4. Step 4: Simplify right side
    553,712.40x = 259,052,642,225.93
  5. Step 5: Solve for x
    x = 259,052,642,225.93/553,712.40
  6. Step 6: Final answer
    x = 467,846.92

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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.