Home / 718,169.02-991,074.60-391,484.69

Finding the Fourth Proportional to 718,169.02, 991,074.60 and 391,484.69

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Solution

The fourth proportional to 718,169.02, 991,074.60 and 391,484.69 is: 540,249.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,169.02 : 991,074.60 = 391,484.69 : x
  2. Step 2: Convert to fraction form
    718,169.02/991,074.60 = 391,484.69/x
  3. Step 3: Cross multiply
    718,169.02x = 991,074.60 × 391,484.69
  4. Step 4: Simplify right side
    718,169.02x = 387,990,535,782.78
  5. Step 5: Solve for x
    x = 387,990,535,782.78/718,169.02
  6. Step 6: Final answer
    x = 540,249.62

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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.