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Finding the Fourth Proportional to 637,267.78, 879,422.70 and 350,781.76

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Solution

The fourth proportional to 637,267.78, 879,422.70 and 350,781.76 is: 484,075.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,267.78 : 879,422.70 = 350,781.76 : x
  2. Step 2: Convert to fraction form
    637,267.78/879,422.70 = 350,781.76/x
  3. Step 3: Cross multiply
    637,267.78x = 879,422.70 × 350,781.76
  4. Step 4: Simplify right side
    637,267.78x = 308,485,442,489.95
  5. Step 5: Solve for x
    x = 308,485,442,489.95/637,267.78
  6. Step 6: Final answer
    x = 484,075.07

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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.