Home / 999,980.97-1,500,119.16-289,916.75

Finding the Fourth Proportional to 999,980.97, 1,500,119.16 and 289,916.75

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Solution

The fourth proportional to 999,980.97, 1,500,119.16 and 289,916.75 is: 434,917.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    999,980.97 : 1,500,119.16 = 289,916.75 : x
  2. Step 2: Convert to fraction form
    999,980.97/1,500,119.16 = 289,916.75/x
  3. Step 3: Cross multiply
    999,980.97x = 1,500,119.16 × 289,916.75
  4. Step 4: Simplify right side
    999,980.97x = 434,909,663,979.33
  5. Step 5: Solve for x
    x = 434,909,663,979.33/999,980.97
  6. Step 6: Final answer
    x = 434,917.94

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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.