Home / 487,428.05-672,713.37-272,580.21

Finding the Fourth Proportional to 487,428.05, 672,713.37 and 272,580.21

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Solution

The fourth proportional to 487,428.05, 672,713.37 and 272,580.21 is: 376,195.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,428.05 : 672,713.37 = 272,580.21 : x
  2. Step 2: Convert to fraction form
    487,428.05/672,713.37 = 272,580.21/x
  3. Step 3: Cross multiply
    487,428.05x = 672,713.37 × 272,580.21
  4. Step 4: Simplify right side
    487,428.05x = 183,368,351,664.41
  5. Step 5: Solve for x
    x = 183,368,351,664.41/487,428.05
  6. Step 6: Final answer
    x = 376,195.73

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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.