Home / 654,423.95-981,636.20-205,179.81

Finding the Fourth Proportional to 654,423.95, 981,636.20 and 205,179.81

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Solution

The fourth proportional to 654,423.95, 981,636.20 and 205,179.81 is: 307,769.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,423.95 : 981,636.20 = 205,179.81 : x
  2. Step 2: Convert to fraction form
    654,423.95/981,636.20 = 205,179.81/x
  3. Step 3: Cross multiply
    654,423.95x = 981,636.20 × 205,179.81
  4. Step 4: Simplify right side
    654,423.95x = 201,411,927,979.22
  5. Step 5: Solve for x
    x = 201,411,927,979.22/654,423.95
  6. Step 6: Final answer
    x = 307,769.80

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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.