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Finding the Fourth Proportional to 615,015.90, 922,195.80 and 259,628.40

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Solution

The fourth proportional to 615,015.90, 922,195.80 and 259,628.40 is: 389,304.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,015.90 : 922,195.80 = 259,628.40 : x
  2. Step 2: Convert to fraction form
    615,015.90/922,195.80 = 259,628.40/x
  3. Step 3: Cross multiply
    615,015.90x = 922,195.80 × 259,628.40
  4. Step 4: Simplify right side
    615,015.90x = 239,428,220,040.72
  5. Step 5: Solve for x
    x = 239,428,220,040.72/615,015.90
  6. Step 6: Final answer
    x = 389,304.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.