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Finding the Fourth Proportional to 555,498.91, 766,635.69 and 313,825.83

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Solution

The fourth proportional to 555,498.91, 766,635.69 and 313,825.83 is: 433,106.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,498.91 : 766,635.69 = 313,825.83 : x
  2. Step 2: Convert to fraction form
    555,498.91/766,635.69 = 313,825.83/x
  3. Step 3: Cross multiply
    555,498.91x = 766,635.69 × 313,825.83
  4. Step 4: Simplify right side
    555,498.91x = 240,590,081,721.87
  5. Step 5: Solve for x
    x = 240,590,081,721.87/555,498.91
  6. Step 6: Final answer
    x = 433,106.31

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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.