Home / 1,431,860.28-1,975,968.78-787,291.32

Finding the Fourth Proportional to 1,431,860.28, 1,975,968.78 and 787,291.32

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Solution

The fourth proportional to 1,431,860.28, 1,975,968.78 and 787,291.32 is: 1,086,462.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,860.28 : 1,975,968.78 = 787,291.32 : x
  2. Step 2: Convert to fraction form
    1,431,860.28/1,975,968.78 = 787,291.32/x
  3. Step 3: Cross multiply
    1,431,860.28x = 1,975,968.78 × 787,291.32
  4. Step 4: Simplify right side
    1,431,860.28x = 1,555,663,069,084.99
  5. Step 5: Solve for x
    x = 1,555,663,069,084.99/1,431,860.28
  6. Step 6: Final answer
    x = 1,086,462.90

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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.