Home / 1,351,990.12-1,866,216-836,138.92

Finding the Fourth Proportional to 1,351,990.12, 1,866,216 and 836,138.92

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Solution

The fourth proportional to 1,351,990.12, 1,866,216 and 836,138.92 is: 1,154,162.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,351,990.12 : 1,866,216 = 836,138.92 : x
  2. Step 2: Convert to fraction form
    1,351,990.12/1,866,216 = 836,138.92/x
  3. Step 3: Cross multiply
    1,351,990.12x = 1,866,216 × 836,138.92
  4. Step 4: Simplify right side
    1,351,990.12x = 1,560,415,830,726.72
  5. Step 5: Solve for x
    x = 1,560,415,830,726.72/1,351,990.12
  6. Step 6: Final answer
    x = 1,154,162.16

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Double scale
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1.5x scale

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.