Home / 688,098.52-1,031,622.54-388,916.92

Finding the Fourth Proportional to 688,098.52, 1,031,622.54 and 388,916.92

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Solution

The fourth proportional to 688,098.52, 1,031,622.54 and 388,916.92 is: 583,078.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,098.52 : 1,031,622.54 = 388,916.92 : x
  2. Step 2: Convert to fraction form
    688,098.52/1,031,622.54 = 388,916.92/x
  3. Step 3: Cross multiply
    688,098.52x = 1,031,622.54 × 388,916.92
  4. Step 4: Simplify right side
    688,098.52x = 401,215,460,859.38
  5. Step 5: Solve for x
    x = 401,215,460,859.38/688,098.52
  6. Step 6: Final answer
    x = 583,078.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.