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Finding the Fourth Proportional to 555,500.79, 766,606.83 and 313,793.55

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Solution

The fourth proportional to 555,500.79, 766,606.83 and 313,793.55 is: 433,043.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,500.79 : 766,606.83 = 313,793.55 : x
  2. Step 2: Convert to fraction form
    555,500.79/766,606.83 = 313,793.55/x
  3. Step 3: Cross multiply
    555,500.79x = 766,606.83 × 313,793.55
  4. Step 4: Simplify right side
    555,500.79x = 240,556,278,639.95
  5. Step 5: Solve for x
    x = 240,556,278,639.95/555,500.79
  6. Step 6: Final answer
    x = 433,043.99

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1.5x scale

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.