Home / 628,756.36-867,683.78-342,278.52

Finding the Fourth Proportional to 628,756.36, 867,683.78 and 342,278.52

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Solution

The fourth proportional to 628,756.36, 867,683.78 and 342,278.52 is: 472,344.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,756.36 : 867,683.78 = 342,278.52 : x
  2. Step 2: Convert to fraction form
    628,756.36/867,683.78 = 342,278.52/x
  3. Step 3: Cross multiply
    628,756.36x = 867,683.78 × 342,278.52
  4. Step 4: Simplify right side
    628,756.36x = 296,989,520,046.41
  5. Step 5: Solve for x
    x = 296,989,520,046.41/628,756.36
  6. Step 6: Final answer
    x = 472,344.36

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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.