Home / 487,238.36-672,142.74-326,100.20

Finding the Fourth Proportional to 487,238.36, 672,142.74 and 326,100.20

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Solution

The fourth proportional to 487,238.36, 672,142.74 and 326,100.20 is: 449,853.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,238.36 : 672,142.74 = 326,100.20 : x
  2. Step 2: Convert to fraction form
    487,238.36/672,142.74 = 326,100.20/x
  3. Step 3: Cross multiply
    487,238.36x = 672,142.74 × 326,100.20
  4. Step 4: Simplify right side
    487,238.36x = 219,185,881,942.55
  5. Step 5: Solve for x
    x = 219,185,881,942.55/487,238.36
  6. Step 6: Final answer
    x = 449,853.50

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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.