Home / 1,431,638.28-1,975,610.41-787,053.74

Finding the Fourth Proportional to 1,431,638.28, 1,975,610.41 and 787,053.74

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Solution

The fourth proportional to 1,431,638.28, 1,975,610.41 and 787,053.74 is: 1,086,106.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,638.28 : 1,975,610.41 = 787,053.74 : x
  2. Step 2: Convert to fraction form
    1,431,638.28/1,975,610.41 = 787,053.74/x
  3. Step 3: Cross multiply
    1,431,638.28x = 1,975,610.41 × 787,053.74
  4. Step 4: Simplify right side
    1,431,638.28x = 1,554,911,550,127.75
  5. Step 5: Solve for x
    x = 1,554,911,550,127.75/1,431,638.28
  6. Step 6: Final answer
    x = 1,086,106.44

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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.