Home / 1,258,081.80-1,885,548.04-990,786.64

Finding the Fourth Proportional to 1,258,081.80, 1,885,548.04 and 990,786.64

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Solution

The fourth proportional to 1,258,081.80, 1,885,548.04 and 990,786.64 is: 1,484,939.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,081.80 : 1,885,548.04 = 990,786.64 : x
  2. Step 2: Convert to fraction form
    1,258,081.80/1,885,548.04 = 990,786.64/x
  3. Step 3: Cross multiply
    1,258,081.80x = 1,885,548.04 × 990,786.64
  4. Step 4: Simplify right side
    1,258,081.80x = 1,868,175,807,110.19
  5. Step 5: Solve for x
    x = 1,868,175,807,110.19/1,258,081.80
  6. Step 6: Final answer
    x = 1,484,939.86

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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.