Home / 948,658.28-1,309,179.65-518,928.57

Finding the Fourth Proportional to 948,658.28, 1,309,179.65 and 518,928.57

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Solution

The fourth proportional to 948,658.28, 1,309,179.65 and 518,928.57 is: 716,138.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    948,658.28 : 1,309,179.65 = 518,928.57 : x
  2. Step 2: Convert to fraction form
    948,658.28/1,309,179.65 = 518,928.57/x
  3. Step 3: Cross multiply
    948,658.28x = 1,309,179.65 × 518,928.57
  4. Step 4: Simplify right side
    948,658.28x = 679,370,721,052.96
  5. Step 5: Solve for x
    x = 679,370,721,052.96/948,658.28
  6. Step 6: Final answer
    x = 716,138.51

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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.