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Finding the Fourth Proportional to 555,474.79, 766,617.55 and 313,772.93

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Solution

The fourth proportional to 555,474.79, 766,617.55 and 313,772.93 is: 433,041.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,474.79 : 766,617.55 = 313,772.93 : x
  2. Step 2: Convert to fraction form
    555,474.79/766,617.55 = 313,772.93/x
  3. Step 3: Cross multiply
    555,474.79x = 766,617.55 × 313,772.93
  4. Step 4: Simplify right side
    555,474.79x = 240,543,834,177.68
  5. Step 5: Solve for x
    x = 240,543,834,177.68/555,474.79
  6. Step 6: Final answer
    x = 433,041.86

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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.