Home / 640,919.18-884,445.28-350,520.82

Finding the Fourth Proportional to 640,919.18, 884,445.28 and 350,520.82

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Solution

The fourth proportional to 640,919.18, 884,445.28 and 350,520.82 is: 483,706.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,919.18 : 884,445.28 = 350,520.82 : x
  2. Step 2: Convert to fraction form
    640,919.18/884,445.28 = 350,520.82/x
  3. Step 3: Cross multiply
    640,919.18x = 884,445.28 × 350,520.82
  4. Step 4: Simplify right side
    640,919.18x = 310,016,481,703.31
  5. Step 5: Solve for x
    x = 310,016,481,703.31/640,919.18
  6. Step 6: Final answer
    x = 483,706.04

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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.