Home / 990,821.66-1,367,418.22-561,178.22

Finding the Fourth Proportional to 990,821.66, 1,367,418.22 and 561,178.22

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Solution

The fourth proportional to 990,821.66, 1,367,418.22 and 561,178.22 is: 774,473.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,821.66 : 1,367,418.22 = 561,178.22 : x
  2. Step 2: Convert to fraction form
    990,821.66/1,367,418.22 = 561,178.22/x
  3. Step 3: Cross multiply
    990,821.66x = 1,367,418.22 × 561,178.22
  4. Step 4: Simplify right side
    990,821.66x = 767,365,316,470.73
  5. Step 5: Solve for x
    x = 767,365,316,470.73/990,821.66
  6. Step 6: Final answer
    x = 774,473.70

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1.5x scale

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.