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Finding the Fourth Proportional to 573,158.81, 790,125.54 and 400,540.85

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Solution

The fourth proportional to 573,158.81, 790,125.54 and 400,540.85 is: 552,163.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,158.81 : 790,125.54 = 400,540.85 : x
  2. Step 2: Convert to fraction form
    573,158.81/790,125.54 = 400,540.85/x
  3. Step 3: Cross multiply
    573,158.81x = 790,125.54 × 400,540.85
  4. Step 4: Simplify right side
    573,158.81x = 316,477,552,908.62
  5. Step 5: Solve for x
    x = 316,477,552,908.62/573,158.81
  6. Step 6: Final answer
    x = 552,163.81

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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.