Home / 628,438.91-867,094.53-370,326.43

Finding the Fourth Proportional to 628,438.91, 867,094.53 and 370,326.43

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Solution

The fourth proportional to 628,438.91, 867,094.53 and 370,326.43 is: 510,961.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,438.91 : 867,094.53 = 370,326.43 : x
  2. Step 2: Convert to fraction form
    628,438.91/867,094.53 = 370,326.43/x
  3. Step 3: Cross multiply
    628,438.91x = 867,094.53 × 370,326.43
  4. Step 4: Simplify right side
    628,438.91x = 321,108,021,767.43
  5. Step 5: Solve for x
    x = 321,108,021,767.43/628,438.91
  6. Step 6: Final answer
    x = 510,961.39

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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.