Home / 986,815.77-1,361,816.88-578,924.61

Finding the Fourth Proportional to 986,815.77, 1,361,816.88 and 578,924.61

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Solution

The fourth proportional to 986,815.77, 1,361,816.88 and 578,924.61 is: 798,922.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    986,815.77 : 1,361,816.88 = 578,924.61 : x
  2. Step 2: Convert to fraction form
    986,815.77/1,361,816.88 = 578,924.61/x
  3. Step 3: Cross multiply
    986,815.77x = 1,361,816.88 × 578,924.61
  4. Step 4: Simplify right side
    986,815.77x = 788,389,306,145.42
  5. Step 5: Solve for x
    x = 788,389,306,145.42/986,815.77
  6. Step 6: Final answer
    x = 798,922.48

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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.