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Finding the Fourth Proportional to 555,550.80, 766,722.32 and 313,848.95

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Solution

The fourth proportional to 555,550.80, 766,722.32 and 313,848.95 is: 433,146.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,550.80 : 766,722.32 = 313,848.95 : x
  2. Step 2: Convert to fraction form
    555,550.80/766,722.32 = 313,848.95/x
  3. Step 3: Cross multiply
    555,550.80x = 766,722.32 × 313,848.95
  4. Step 4: Simplify right side
    555,550.80x = 240,634,992,613.04
  5. Step 5: Solve for x
    x = 240,634,992,613.04/555,550.80
  6. Step 6: Final answer
    x = 433,146.69

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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.