Home / 1,572,079.68-2,168,840.07-991,111.64

Finding the Fourth Proportional to 1,572,079.68, 2,168,840.07 and 991,111.64

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Solution

The fourth proportional to 1,572,079.68, 2,168,840.07 and 991,111.64 is: 1,367,336.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,572,079.68 : 2,168,840.07 = 991,111.64 : x
  2. Step 2: Convert to fraction form
    1,572,079.68/2,168,840.07 = 991,111.64/x
  3. Step 3: Cross multiply
    1,572,079.68x = 2,168,840.07 × 991,111.64
  4. Step 4: Simplify right side
    1,572,079.68x = 2,149,562,627,831.21
  5. Step 5: Solve for x
    x = 2,149,562,627,831.21/1,572,079.68
  6. Step 6: Final answer
    x = 1,367,336.95

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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.