Home / 486,981.60-672,021.71-272,123.43

Finding the Fourth Proportional to 486,981.60, 672,021.71 and 272,123.43

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Solution

The fourth proportional to 486,981.60, 672,021.71 and 272,123.43 is: 375,523.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,981.60 : 672,021.71 = 272,123.43 : x
  2. Step 2: Convert to fraction form
    486,981.60/672,021.71 = 272,123.43/x
  3. Step 3: Cross multiply
    486,981.60x = 672,021.71 × 272,123.43
  4. Step 4: Simplify right side
    486,981.60x = 182,872,851,399.05
  5. Step 5: Solve for x
    x = 182,872,851,399.05/486,981.60
  6. Step 6: Final answer
    x = 375,523.12

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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.