Home / 1,091,256.40-1,505,696.30-661,642.12

Finding the Fourth Proportional to 1,091,256.40, 1,505,696.30 and 661,642.12

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Solution

The fourth proportional to 1,091,256.40, 1,505,696.30 and 661,642.12 is: 912,922.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,091,256.40 : 1,505,696.30 = 661,642.12 : x
  2. Step 2: Convert to fraction form
    1,091,256.40/1,505,696.30 = 661,642.12/x
  3. Step 3: Cross multiply
    1,091,256.40x = 1,505,696.30 × 661,642.12
  4. Step 4: Simplify right side
    1,091,256.40x = 996,232,092,008.16
  5. Step 5: Solve for x
    x = 996,232,092,008.16/1,091,256.40
  6. Step 6: Final answer
    x = 912,922.11

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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.