Home / 643,548.38-884,947.48-558,517.82

Finding the Fourth Proportional to 643,548.38, 884,947.48 and 558,517.82

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Solution

The fourth proportional to 643,548.38, 884,947.48 and 558,517.82 is: 768,021.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,548.38 : 884,947.48 = 558,517.82 : x
  2. Step 2: Convert to fraction form
    643,548.38/884,947.48 = 558,517.82/x
  3. Step 3: Cross multiply
    643,548.38x = 884,947.48 × 558,517.82
  4. Step 4: Simplify right side
    643,548.38x = 494,258,931,523.06
  5. Step 5: Solve for x
    x = 494,258,931,523.06/643,548.38
  6. Step 6: Final answer
    x = 768,021.41

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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.