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Finding the Fourth Proportional to 887,661.90, 1,331,463.69 and 355,039.98

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Solution

The fourth proportional to 887,661.90, 1,331,463.69 and 355,039.98 is: 532,548.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,661.90 : 1,331,463.69 = 355,039.98 : x
  2. Step 2: Convert to fraction form
    887,661.90/1,331,463.69 = 355,039.98/x
  3. Step 3: Cross multiply
    887,661.90x = 1,331,463.69 × 355,039.98
  4. Step 4: Simplify right side
    887,661.90x = 472,722,841,868.33
  5. Step 5: Solve for x
    x = 472,722,841,868.33/887,661.90
  6. Step 6: Final answer
    x = 532,548.31

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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.