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Finding the Fourth Proportional to 861,452.64, 1,292,244.54 and 262,464.90

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Solution

The fourth proportional to 861,452.64, 1,292,244.54 and 262,464.90 is: 393,717.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,452.64 : 1,292,244.54 = 262,464.90 : x
  2. Step 2: Convert to fraction form
    861,452.64/1,292,244.54 = 262,464.90/x
  3. Step 3: Cross multiply
    861,452.64x = 1,292,244.54 × 262,464.90
  4. Step 4: Simplify right side
    861,452.64x = 339,168,833,966.65
  5. Step 5: Solve for x
    x = 339,168,833,966.65/861,452.64
  6. Step 6: Final answer
    x = 393,717.33

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1.5x scale

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.