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Finding the Fourth Proportional to 634,871.56, 876,148.02 and 348,401.90

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Solution

The fourth proportional to 634,871.56, 876,148.02 and 348,401.90 is: 480,808.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,871.56 : 876,148.02 = 348,401.90 : x
  2. Step 2: Convert to fraction form
    634,871.56/876,148.02 = 348,401.90/x
  3. Step 3: Cross multiply
    634,871.56x = 876,148.02 × 348,401.90
  4. Step 4: Simplify right side
    634,871.56x = 305,251,632,447.55
  5. Step 5: Solve for x
    x = 305,251,632,447.55/634,871.56
  6. Step 6: Final answer
    x = 480,808.48

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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.