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Finding the Fourth Proportional to 628,977.92, 868,006.08 and 342,510.08

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Solution

The fourth proportional to 628,977.92, 868,006.08 and 342,510.08 is: 472,672.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,977.92 : 868,006.08 = 342,510.08 : x
  2. Step 2: Convert to fraction form
    628,977.92/868,006.08 = 342,510.08/x
  3. Step 3: Cross multiply
    628,977.92x = 868,006.08 × 342,510.08
  4. Step 4: Simplify right side
    628,977.92x = 297,300,831,901.29
  5. Step 5: Solve for x
    x = 297,300,831,901.29/628,977.92
  6. Step 6: Final answer
    x = 472,672.92

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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.