Home / 1,391,831.92-2,085,129.24-1,091,400.40

Finding the Fourth Proportional to 1,391,831.92, 2,085,129.24 and 1,091,400.40

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Solution

The fourth proportional to 1,391,831.92, 2,085,129.24 and 1,091,400.40 is: 1,635,047.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,831.92 : 2,085,129.24 = 1,091,400.40 : x
  2. Step 2: Convert to fraction form
    1,391,831.92/2,085,129.24 = 1,091,400.40/x
  3. Step 3: Cross multiply
    1,391,831.92x = 2,085,129.24 × 1,091,400.40
  4. Step 4: Simplify right side
    1,391,831.92x = 2,275,710,886,587.70
  5. Step 5: Solve for x
    x = 2,275,710,886,587.70/1,391,831.92
  6. Step 6: Final answer
    x = 1,635,047.20

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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.