Home / 1,277,439.20-1,916,083.57-478,653.87

Finding the Fourth Proportional to 1,277,439.20, 1,916,083.57 and 478,653.87

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Solution

The fourth proportional to 1,277,439.20, 1,916,083.57 and 478,653.87 is: 717,952.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,277,439.20 : 1,916,083.57 = 478,653.87 : x
  2. Step 2: Convert to fraction form
    1,277,439.20/1,916,083.57 = 478,653.87/x
  3. Step 3: Cross multiply
    1,277,439.20x = 1,916,083.57 × 478,653.87
  4. Step 4: Simplify right side
    1,277,439.20x = 917,140,816,023.92
  5. Step 5: Solve for x
    x = 917,140,816,023.92/1,277,439.20
  6. Step 6: Final answer
    x = 717,952.62

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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.