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Finding the Fourth Proportional to 643,464.33, 888,022.85 and 371,543.69

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Solution

The fourth proportional to 643,464.33, 888,022.85 and 371,543.69 is: 512,754.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,464.33 : 888,022.85 = 371,543.69 : x
  2. Step 2: Convert to fraction form
    643,464.33/888,022.85 = 371,543.69/x
  3. Step 3: Cross multiply
    643,464.33x = 888,022.85 × 371,543.69
  4. Step 4: Simplify right side
    643,464.33x = 329,939,280,195.48
  5. Step 5: Solve for x
    x = 329,939,280,195.48/643,464.33
  6. Step 6: Final answer
    x = 512,754.58

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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.