Home / 628,493.76-867,319.79-342,013.77

Finding the Fourth Proportional to 628,493.76, 867,319.79 and 342,013.77

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Solution

The fourth proportional to 628,493.76, 867,319.79 and 342,013.77 is: 471,978.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,493.76 : 867,319.79 = 342,013.77 : x
  2. Step 2: Convert to fraction form
    628,493.76/867,319.79 = 342,013.77/x
  3. Step 3: Cross multiply
    628,493.76x = 867,319.79 × 342,013.77
  4. Step 4: Simplify right side
    628,493.76x = 296,635,309,463.44
  5. Step 5: Solve for x
    x = 296,635,309,463.44/628,493.76
  6. Step 6: Final answer
    x = 471,978.13

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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.