Home / 1,431,911.50-1,975,987.29-787,327.18

Finding the Fourth Proportional to 1,431,911.50, 1,975,987.29 and 787,327.18

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Solution

The fourth proportional to 1,431,911.50, 1,975,987.29 and 787,327.18 is: 1,086,483.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,911.50 : 1,975,987.29 = 787,327.18 : x
  2. Step 2: Convert to fraction form
    1,431,911.50/1,975,987.29 = 787,327.18/x
  3. Step 3: Cross multiply
    1,431,911.50x = 1,975,987.29 × 787,327.18
  4. Step 4: Simplify right side
    1,431,911.50x = 1,555,748,500,751.54
  5. Step 5: Solve for x
    x = 1,555,748,500,751.54/1,431,911.50
  6. Step 6: Final answer
    x = 1,086,483.70

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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.