Home / 1,291,904.64-1,780,980.75-908,742.24

Finding the Fourth Proportional to 1,291,904.64, 1,780,980.75 and 908,742.24

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Solution

The fourth proportional to 1,291,904.64, 1,780,980.75 and 908,742.24 is: 1,252,764.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,904.64 : 1,780,980.75 = 908,742.24 : x
  2. Step 2: Convert to fraction form
    1,291,904.64/1,780,980.75 = 908,742.24/x
  3. Step 3: Cross multiply
    1,291,904.64x = 1,780,980.75 × 908,742.24
  4. Step 4: Simplify right side
    1,291,904.64x = 1,618,452,436,151.88
  5. Step 5: Solve for x
    x = 1,618,452,436,151.88/1,291,904.64
  6. Step 6: Final answer
    x = 1,252,764.63

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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.