Home / 1,431,913.50-1,975,990.05-787,329.18

Finding the Fourth Proportional to 1,431,913.50, 1,975,990.05 and 787,329.18

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Solution

The fourth proportional to 1,431,913.50, 1,975,990.05 and 787,329.18 is: 1,086,486.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,913.50 : 1,975,990.05 = 787,329.18 : x
  2. Step 2: Convert to fraction form
    1,431,913.50/1,975,990.05 = 787,329.18/x
  3. Step 3: Cross multiply
    1,431,913.50x = 1,975,990.05 × 787,329.18
  4. Step 4: Simplify right side
    1,431,913.50x = 1,555,754,625,754.66
  5. Step 5: Solve for x
    x = 1,555,754,625,754.66/1,431,913.50
  6. Step 6: Final answer
    x = 1,086,486.46

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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.