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Finding the Fourth Proportional to 787,777.11, 1,087,071.03 and 465,426.09

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Solution

The fourth proportional to 787,777.11, 1,087,071.03 and 465,426.09 is: 642,251.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,777.11 : 1,087,071.03 = 465,426.09 : x
  2. Step 2: Convert to fraction form
    787,777.11/1,087,071.03 = 465,426.09/x
  3. Step 3: Cross multiply
    787,777.11x = 1,087,071.03 × 465,426.09
  4. Step 4: Simplify right side
    787,777.11x = 505,951,219,045.17
  5. Step 5: Solve for x
    x = 505,951,219,045.17/787,777.11
  6. Step 6: Final answer
    x = 642,251.74

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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.