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Finding the Fourth Proportional to 555,137.12, 766,086.18 and 313,417.46

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Solution

The fourth proportional to 555,137.12, 766,086.18 and 313,417.46 is: 432,514.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,137.12 : 766,086.18 = 313,417.46 : x
  2. Step 2: Convert to fraction form
    555,137.12/766,086.18 = 313,417.46/x
  3. Step 3: Cross multiply
    555,137.12x = 766,086.18 × 313,417.46
  4. Step 4: Simplify right side
    555,137.12x = 240,104,784,676.70
  5. Step 5: Solve for x
    x = 240,104,784,676.70/555,137.12
  6. Step 6: Final answer
    x = 432,514.38

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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.