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Finding the Fourth Proportional to 579,695.31, 799,611.42 and 418,786.77

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Solution

The fourth proportional to 579,695.31, 799,611.42 and 418,786.77 is: 577,659.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,695.31 : 799,611.42 = 418,786.77 : x
  2. Step 2: Convert to fraction form
    579,695.31/799,611.42 = 418,786.77/x
  3. Step 3: Cross multiply
    579,695.31x = 799,611.42 × 418,786.77
  4. Step 4: Simplify right side
    579,695.31x = 334,866,683,836.91
  5. Step 5: Solve for x
    x = 334,866,683,836.91/579,695.31
  6. Step 6: Final answer
    x = 577,659.81

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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.