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Finding the Fourth Proportional to 550,777.92, 760,011.84 and 309,010.20

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Solution

The fourth proportional to 550,777.92, 760,011.84 and 309,010.20 is: 426,399.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,777.92 : 760,011.84 = 309,010.20 : x
  2. Step 2: Convert to fraction form
    550,777.92/760,011.84 = 309,010.20/x
  3. Step 3: Cross multiply
    550,777.92x = 760,011.84 × 309,010.20
  4. Step 4: Simplify right side
    550,777.92x = 234,851,410,680.77
  5. Step 5: Solve for x
    x = 234,851,410,680.77/550,777.92
  6. Step 6: Final answer
    x = 426,399.47

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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.