Home / 1,277,391-1,916,086.81-519,644.71

Finding the Fourth Proportional to 1,277,391, 1,916,086.81 and 519,644.71

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Solution

The fourth proportional to 1,277,391, 1,916,086.81 and 519,644.71 is: 779,467.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,391 : 1,916,086.81 = 519,644.71 : x
  2. Step 2: Convert to fraction form
    1,277,391/1,916,086.81 = 519,644.71/x
  3. Step 3: Cross multiply
    1,277,391x = 1,916,086.81 × 519,644.71
  4. Step 4: Simplify right side
    1,277,391x = 995,684,368,627.95
  5. Step 5: Solve for x
    x = 995,684,368,627.95/1,277,391
  6. Step 6: Final answer
    x = 779,467.19

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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.