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Finding the Fourth Proportional to 642,602.60, 963,731.10 and 268,548.20

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Solution

The fourth proportional to 642,602.60, 963,731.10 and 268,548.20 is: 402,750.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,602.60 : 963,731.10 = 268,548.20 : x
  2. Step 2: Convert to fraction form
    642,602.60/963,731.10 = 268,548.20/x
  3. Step 3: Cross multiply
    642,602.60x = 963,731.10 × 268,548.20
  4. Step 4: Simplify right side
    642,602.60x = 258,808,252,189.02
  5. Step 5: Solve for x
    x = 258,808,252,189.02/642,602.60
  6. Step 6: Final answer
    x = 402,750.09

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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.