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Finding the Fourth Proportional to 548,686.89, 757,041.93 and 376,657.47

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Solution

The fourth proportional to 548,686.89, 757,041.93 and 376,657.47 is: 519,687.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,686.89 : 757,041.93 = 376,657.47 : x
  2. Step 2: Convert to fraction form
    548,686.89/757,041.93 = 376,657.47/x
  3. Step 3: Cross multiply
    548,686.89x = 757,041.93 × 376,657.47
  4. Step 4: Simplify right side
    548,686.89x = 285,145,498,037.72
  5. Step 5: Solve for x
    x = 285,145,498,037.72/548,686.89
  6. Step 6: Final answer
    x = 519,687.10

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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.