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Finding the Fourth Proportional to 642,622.95, 963,011.03 and 361,546.47

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Solution

The fourth proportional to 642,622.95, 963,011.03 and 361,546.47 is: 541,800.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,622.95 : 963,011.03 = 361,546.47 : x
  2. Step 2: Convert to fraction form
    642,622.95/963,011.03 = 361,546.47/x
  3. Step 3: Cross multiply
    642,622.95x = 963,011.03 × 361,546.47
  4. Step 4: Simplify right side
    642,622.95x = 348,173,236,659.83
  5. Step 5: Solve for x
    x = 348,173,236,659.83/642,622.95
  6. Step 6: Final answer
    x = 541,800.19

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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.