Home / 645,275.28-968,109.84-329,953.68

Finding the Fourth Proportional to 645,275.28, 968,109.84 and 329,953.68

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Solution

The fourth proportional to 645,275.28, 968,109.84 and 329,953.68 is: 495,031.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,275.28 : 968,109.84 = 329,953.68 : x
  2. Step 2: Convert to fraction form
    645,275.28/968,109.84 = 329,953.68/x
  3. Step 3: Cross multiply
    645,275.28x = 968,109.84 × 329,953.68
  4. Step 4: Simplify right side
    645,275.28x = 319,431,404,352.21
  5. Step 5: Solve for x
    x = 319,431,404,352.21/645,275.28
  6. Step 6: Final answer
    x = 495,031.21

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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.