Home / 1,760,938.20-2,640,240.90-638,861.40

Finding the Fourth Proportional to 1,760,938.20, 2,640,240.90 and 638,861.40

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Solution

The fourth proportional to 1,760,938.20, 2,640,240.90 and 638,861.40 is: 957,868.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,760,938.20 : 2,640,240.90 = 638,861.40 : x
  2. Step 2: Convert to fraction form
    1,760,938.20/2,640,240.90 = 638,861.40/x
  3. Step 3: Cross multiply
    1,760,938.20x = 2,640,240.90 × 638,861.40
  4. Step 4: Simplify right side
    1,760,938.20x = 1,686,747,997,711.26
  5. Step 5: Solve for x
    x = 1,686,747,997,711.26/1,760,938.20
  6. Step 6: Final answer
    x = 957,868.93

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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.