Home / 643,271.24-887,820.60-356,883.59

Finding the Fourth Proportional to 643,271.24, 887,820.60 and 356,883.59

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Solution

The fourth proportional to 643,271.24, 887,820.60 and 356,883.59 is: 492,558.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,271.24 : 887,820.60 = 356,883.59 : x
  2. Step 2: Convert to fraction form
    643,271.24/887,820.60 = 356,883.59/x
  3. Step 3: Cross multiply
    643,271.24x = 887,820.60 × 356,883.59
  4. Step 4: Simplify right side
    643,271.24x = 316,848,598,564.85
  5. Step 5: Solve for x
    x = 316,848,598,564.85/643,271.24
  6. Step 6: Final answer
    x = 492,558.32

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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.