Home / 465,940.08-698,911.02-128,981.72

Finding the Fourth Proportional to 465,940.08, 698,911.02 and 128,981.72

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Solution

The fourth proportional to 465,940.08, 698,911.02 and 128,981.72 is: 193,472.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,940.08 : 698,911.02 = 128,981.72 : x
  2. Step 2: Convert to fraction form
    465,940.08/698,911.02 = 128,981.72/x
  3. Step 3: Cross multiply
    465,940.08x = 698,911.02 × 128,981.72
  4. Step 4: Simplify right side
    465,940.08x = 90,146,745,486.55
  5. Step 5: Solve for x
    x = 90,146,745,486.55/465,940.08
  6. Step 6: Final answer
    x = 193,472.83

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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.