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Finding the Fourth Proportional to 555,765.80, 766,946.78 and 314,043.18

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Solution

The fourth proportional to 555,765.80, 766,946.78 and 314,043.18 is: 433,373.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,765.80 : 766,946.78 = 314,043.18 : x
  2. Step 2: Convert to fraction form
    555,765.80/766,946.78 = 314,043.18/x
  3. Step 3: Cross multiply
    555,765.80x = 766,946.78 × 314,043.18
  4. Step 4: Simplify right side
    555,765.80x = 240,854,405,681.96
  5. Step 5: Solve for x
    x = 240,854,405,681.96/555,765.80
  6. Step 6: Final answer
    x = 433,373.92

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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.