Home / 1,231,705-1,847,611.26-390,318.76

Finding the Fourth Proportional to 1,231,705, 1,847,611.26 and 390,318.76

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Solution

The fourth proportional to 1,231,705, 1,847,611.26 and 390,318.76 is: 585,495.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,705 : 1,847,611.26 = 390,318.76 : x
  2. Step 2: Convert to fraction form
    1,231,705/1,847,611.26 = 390,318.76/x
  3. Step 3: Cross multiply
    1,231,705x = 1,847,611.26 × 390,318.76
  4. Step 4: Simplify right side
    1,231,705x = 721,157,335,965.24
  5. Step 5: Solve for x
    x = 721,157,335,965.24/1,231,705
  6. Step 6: Final answer
    x = 585,495.18

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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.