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Finding the Fourth Proportional to 628,495.61, 867,342.03 and 342,033.84

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Solution

The fourth proportional to 628,495.61, 867,342.03 and 342,033.84 is: 472,016.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,495.61 : 867,342.03 = 342,033.84 : x
  2. Step 2: Convert to fraction form
    628,495.61/867,342.03 = 342,033.84/x
  3. Step 3: Cross multiply
    628,495.61x = 867,342.03 × 342,033.84
  4. Step 4: Simplify right side
    628,495.61x = 296,660,323,831.67
  5. Step 5: Solve for x
    x = 296,660,323,831.67/628,495.61
  6. Step 6: Final answer
    x = 472,016.54

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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.