Home / 442,922.10-664,383.15-431,258.10

Finding the Fourth Proportional to 442,922.10, 664,383.15 and 431,258.10

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Solution

The fourth proportional to 442,922.10, 664,383.15 and 431,258.10 is: 646,887.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,922.10 : 664,383.15 = 431,258.10 : x
  2. Step 2: Convert to fraction form
    442,922.10/664,383.15 = 431,258.10/x
  3. Step 3: Cross multiply
    442,922.10x = 664,383.15 × 431,258.10
  4. Step 4: Simplify right side
    442,922.10x = 286,520,614,941.02
  5. Step 5: Solve for x
    x = 286,520,614,941.02/442,922.10
  6. Step 6: Final answer
    x = 646,887.15

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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.