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Finding the Fourth Proportional to 554,997.75, 766,044.96 and 313,421.73

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Solution

The fourth proportional to 554,997.75, 766,044.96 and 313,421.73 is: 432,605.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,997.75 : 766,044.96 = 313,421.73 : x
  2. Step 2: Convert to fraction form
    554,997.75/766,044.96 = 313,421.73/x
  3. Step 3: Cross multiply
    554,997.75x = 766,044.96 × 313,421.73
  4. Step 4: Simplify right side
    554,997.75x = 240,095,136,620.98
  5. Step 5: Solve for x
    x = 240,095,136,620.98/554,997.75
  6. Step 6: Final answer
    x = 432,605.60

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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.