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Finding the Fourth Proportional to 780,447.88, 1,170,535.74 and 219,349

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Solution

The fourth proportional to 780,447.88, 1,170,535.74 and 219,349 is: 328,985.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,447.88 : 1,170,535.74 = 219,349 : x
  2. Step 2: Convert to fraction form
    780,447.88/1,170,535.74 = 219,349/x
  3. Step 3: Cross multiply
    780,447.88x = 1,170,535.74 × 219,349
  4. Step 4: Simplify right side
    780,447.88x = 256,755,844,033.26
  5. Step 5: Solve for x
    x = 256,755,844,033.26/780,447.88
  6. Step 6: Final answer
    x = 328,985.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.