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Finding the Fourth Proportional to 611,081.28, 843,060.69 and 450,319.77

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Solution

The fourth proportional to 611,081.28, 843,060.69 and 450,319.77 is: 621,270.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,081.28 : 843,060.69 = 450,319.77 : x
  2. Step 2: Convert to fraction form
    611,081.28/843,060.69 = 450,319.77/x
  3. Step 3: Cross multiply
    611,081.28x = 843,060.69 × 450,319.77
  4. Step 4: Simplify right side
    611,081.28x = 379,646,896,016.84
  5. Step 5: Solve for x
    x = 379,646,896,016.84/611,081.28
  6. Step 6: Final answer
    x = 621,270.70

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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.