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Finding the Fourth Proportional to 481,722.60, 721,806.30 and 402,407.40

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Solution

The fourth proportional to 481,722.60, 721,806.30 and 402,407.40 is: 602,961.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,722.60 : 721,806.30 = 402,407.40 : x
  2. Step 2: Convert to fraction form
    481,722.60/721,806.30 = 402,407.40/x
  3. Step 3: Cross multiply
    481,722.60x = 721,806.30 × 402,407.40
  4. Step 4: Simplify right side
    481,722.60x = 290,460,196,486.62
  5. Step 5: Solve for x
    x = 290,460,196,486.62/481,722.60
  6. Step 6: Final answer
    x = 602,961.53

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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.