Home / 990,820.28-1,367,416.32-561,176.84

Finding the Fourth Proportional to 990,820.28, 1,367,416.32 and 561,176.84

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Solution

The fourth proportional to 990,820.28, 1,367,416.32 and 561,176.84 is: 774,471.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    990,820.28 : 1,367,416.32 = 561,176.84 : x
  2. Step 2: Convert to fraction form
    990,820.28/1,367,416.32 = 561,176.84/x
  3. Step 3: Cross multiply
    990,820.28x = 1,367,416.32 × 561,176.84
  4. Step 4: Simplify right side
    990,820.28x = 767,362,370,736.16
  5. Step 5: Solve for x
    x = 767,362,370,736.16/990,820.28
  6. Step 6: Final answer
    x = 774,471.80

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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.