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Finding the Fourth Proportional to 642,376.88, 886,730.39 and 370,677.67

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Solution

The fourth proportional to 642,376.88, 886,730.39 and 370,677.67 is: 511,679.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,376.88 : 886,730.39 = 370,677.67 : x
  2. Step 2: Convert to fraction form
    642,376.88/886,730.39 = 370,677.67/x
  3. Step 3: Cross multiply
    642,376.88x = 886,730.39 × 370,677.67
  4. Step 4: Simplify right side
    642,376.88x = 328,691,152,203.22
  5. Step 5: Solve for x
    x = 328,691,152,203.22/642,376.88
  6. Step 6: Final answer
    x = 511,679.61

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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.