Home / 811,868.86-1,120,382.02-439,331.84

Finding the Fourth Proportional to 811,868.86, 1,120,382.02 and 439,331.84

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Solution

The fourth proportional to 811,868.86, 1,120,382.02 and 439,331.84 is: 606,279.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,868.86 : 1,120,382.02 = 439,331.84 : x
  2. Step 2: Convert to fraction form
    811,868.86/1,120,382.02 = 439,331.84/x
  3. Step 3: Cross multiply
    811,868.86x = 1,120,382.02 × 439,331.84
  4. Step 4: Simplify right side
    811,868.86x = 492,219,494,349.52
  5. Step 5: Solve for x
    x = 492,219,494,349.52/811,868.86
  6. Step 6: Final answer
    x = 606,279.56

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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.