Home / 821,296.48-1,231,988.88-260,374.72

Finding the Fourth Proportional to 821,296.48, 1,231,988.88 and 260,374.72

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Solution

The fourth proportional to 821,296.48, 1,231,988.88 and 260,374.72 is: 390,576.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,296.48 : 1,231,988.88 = 260,374.72 : x
  2. Step 2: Convert to fraction form
    821,296.48/1,231,988.88 = 260,374.72/x
  3. Step 3: Cross multiply
    821,296.48x = 1,231,988.88 × 260,374.72
  4. Step 4: Simplify right side
    821,296.48x = 320,778,759,673.11
  5. Step 5: Solve for x
    x = 320,778,759,673.11/821,296.48
  6. Step 6: Final answer
    x = 390,576.08

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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.