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Finding the Fourth Proportional to 556,426.05, 834,358.40 and 396,410.55

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Solution

The fourth proportional to 556,426.05, 834,358.40 and 396,410.55 is: 594,415.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,426.05 : 834,358.40 = 396,410.55 : x
  2. Step 2: Convert to fraction form
    556,426.05/834,358.40 = 396,410.55/x
  3. Step 3: Cross multiply
    556,426.05x = 834,358.40 × 396,410.55
  4. Step 4: Simplify right side
    556,426.05x = 330,748,472,241.12
  5. Step 5: Solve for x
    x = 330,748,472,241.12/556,426.05
  6. Step 6: Final answer
    x = 594,415.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.