Home / 1,211,831.16-1,672,423.38-668,064.12

Finding the Fourth Proportional to 1,211,831.16, 1,672,423.38 and 668,064.12

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Solution

The fourth proportional to 1,211,831.16, 1,672,423.38 and 668,064.12 is: 921,981.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,831.16 : 1,672,423.38 = 668,064.12 : x
  2. Step 2: Convert to fraction form
    1,211,831.16/1,672,423.38 = 668,064.12/x
  3. Step 3: Cross multiply
    1,211,831.16x = 1,672,423.38 × 668,064.12
  4. Step 4: Simplify right side
    1,211,831.16x = 1,117,286,053,627.13
  5. Step 5: Solve for x
    x = 1,117,286,053,627.13/1,211,831.16
  6. Step 6: Final answer
    x = 921,981.62

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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.