Home / 487,241.36-672,146.88-326,103.20

Finding the Fourth Proportional to 487,241.36, 672,146.88 and 326,103.20

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Solution

The fourth proportional to 487,241.36, 672,146.88 and 326,103.20 is: 449,857.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,241.36 : 672,146.88 = 326,103.20 : x
  2. Step 2: Convert to fraction form
    487,241.36/672,146.88 = 326,103.20/x
  3. Step 3: Cross multiply
    487,241.36x = 672,146.88 × 326,103.20
  4. Step 4: Simplify right side
    487,241.36x = 219,189,248,438.02
  5. Step 5: Solve for x
    x = 219,189,248,438.02/487,241.36
  6. Step 6: Final answer
    x = 449,857.64

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1.5x scale

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.