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Finding the Fourth Proportional to 887,622, 1,224,918.36 and 485,214

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Solution

The fourth proportional to 887,622, 1,224,918.36 and 485,214 is: 669,595.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    887,622 : 1,224,918.36 = 485,214 : x
  2. Step 2: Convert to fraction form
    887,622/1,224,918.36 = 485,214/x
  3. Step 3: Cross multiply
    887,622x = 1,224,918.36 × 485,214
  4. Step 4: Simplify right side
    887,622x = 594,347,537,129.04
  5. Step 5: Solve for x
    x = 594,347,537,129.04/887,622
  6. Step 6: Final answer
    x = 669,595.32

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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.