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Finding the Fourth Proportional to 628,607.96, 867,479.02 and 342,130.14

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Solution

The fourth proportional to 628,607.96, 867,479.02 and 342,130.14 is: 472,139.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,607.96 : 867,479.02 = 342,130.14 : x
  2. Step 2: Convert to fraction form
    628,607.96/867,479.02 = 342,130.14/x
  3. Step 3: Cross multiply
    628,607.96x = 867,479.02 × 342,130.14
  4. Step 4: Simplify right side
    628,607.96x = 296,790,718,559.66
  5. Step 5: Solve for x
    x = 296,790,718,559.66/628,607.96
  6. Step 6: Final answer
    x = 472,139.61

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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.