Home / 628,607.48-867,478.32-342,129.65

Finding the Fourth Proportional to 628,607.48, 867,478.32 and 342,129.65

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Solution

The fourth proportional to 628,607.48, 867,478.32 and 342,129.65 is: 472,138.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,607.48 : 867,478.32 = 342,129.65 : x
  2. Step 2: Convert to fraction form
    628,607.48/867,478.32 = 342,129.65/x
  3. Step 3: Cross multiply
    628,607.48x = 867,478.32 × 342,129.65
  4. Step 4: Simplify right side
    628,607.48x = 296,790,049,666.80
  5. Step 5: Solve for x
    x = 296,790,049,666.80/628,607.48
  6. Step 6: Final answer
    x = 472,138.91

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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.