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Finding the Fourth Proportional to 655,907.02, 899,251.82 and 643,951.42

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Solution

The fourth proportional to 655,907.02, 899,251.82 and 643,951.42 is: 882,860.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,907.02 : 899,251.82 = 643,951.42 : x
  2. Step 2: Convert to fraction form
    655,907.02/899,251.82 = 643,951.42/x
  3. Step 3: Cross multiply
    655,907.02x = 899,251.82 × 643,951.42
  4. Step 4: Simplify right side
    655,907.02x = 579,074,486,995.74
  5. Step 5: Solve for x
    x = 579,074,486,995.74/655,907.02
  6. Step 6: Final answer
    x = 882,860.64

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.