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Finding the Fourth Proportional to 555,081.80, 766,015.62 and 313,374.20

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Solution

The fourth proportional to 555,081.80, 766,015.62 and 313,374.20 is: 432,457.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,081.80 : 766,015.62 = 313,374.20 : x
  2. Step 2: Convert to fraction form
    555,081.80/766,015.62 = 313,374.20/x
  3. Step 3: Cross multiply
    555,081.80x = 766,015.62 × 313,374.20
  4. Step 4: Simplify right side
    555,081.80x = 240,049,532,105.00
  5. Step 5: Solve for x
    x = 240,049,532,105.00/555,081.80
  6. Step 6: Final answer
    x = 432,457.94

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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.