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Finding the Fourth Proportional to 654,559.98, 903,274.47 and 396,589.66

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Solution

The fourth proportional to 654,559.98, 903,274.47 and 396,589.66 is: 547,282.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,559.98 : 903,274.47 = 396,589.66 : x
  2. Step 2: Convert to fraction form
    654,559.98/903,274.47 = 396,589.66/x
  3. Step 3: Cross multiply
    654,559.98x = 903,274.47 × 396,589.66
  4. Step 4: Simplify right side
    654,559.98x = 358,229,312,685.79
  5. Step 5: Solve for x
    x = 358,229,312,685.79/654,559.98
  6. Step 6: Final answer
    x = 547,282.64

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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.