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Finding the Fourth Proportional to 555,497.42, 766,602.17 and 313,790.18

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Solution

The fourth proportional to 555,497.42, 766,602.17 and 313,790.18 is: 433,039.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,497.42 : 766,602.17 = 313,790.18 : x
  2. Step 2: Convert to fraction form
    555,497.42/766,602.17 = 313,790.18/x
  3. Step 3: Cross multiply
    555,497.42x = 766,602.17 × 313,790.18
  4. Step 4: Simplify right side
    555,497.42x = 240,552,227,510.73
  5. Step 5: Solve for x
    x = 240,552,227,510.73/555,497.42
  6. Step 6: Final answer
    x = 433,039.33

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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.