Home / 1,211,503.32-1,671,948.54-667,639.08

Finding the Fourth Proportional to 1,211,503.32, 1,671,948.54 and 667,639.08

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Solution

The fourth proportional to 1,211,503.32, 1,671,948.54 and 667,639.08 is: 921,382.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,211,503.32 : 1,671,948.54 = 667,639.08 : x
  2. Step 2: Convert to fraction form
    1,211,503.32/1,671,948.54 = 667,639.08/x
  3. Step 3: Cross multiply
    1,211,503.32x = 1,671,948.54 × 667,639.08
  4. Step 4: Simplify right side
    1,211,503.32x = 1,116,258,185,052.94
  5. Step 5: Solve for x
    x = 1,116,258,185,052.94/1,211,503.32
  6. Step 6: Final answer
    x = 921,382.69

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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.