Home / 1,298,780.10-1,792,161.30-717,924.78

Finding the Fourth Proportional to 1,298,780.10, 1,792,161.30 and 717,924.78

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Solution

The fourth proportional to 1,298,780.10, 1,792,161.30 and 717,924.78 is: 990,650.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,780.10 : 1,792,161.30 = 717,924.78 : x
  2. Step 2: Convert to fraction form
    1,298,780.10/1,792,161.30 = 717,924.78/x
  3. Step 3: Cross multiply
    1,298,780.10x = 1,792,161.30 × 717,924.78
  4. Step 4: Simplify right side
    1,298,780.10x = 1,286,637,007,027.01
  5. Step 5: Solve for x
    x = 1,286,637,007,027.01/1,298,780.10
  6. Step 6: Final answer
    x = 990,650.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.