Home / 727,811.20-1,091,716.80-328,643.20

Finding the Fourth Proportional to 727,811.20, 1,091,716.80 and 328,643.20

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Solution

The fourth proportional to 727,811.20, 1,091,716.80 and 328,643.20 is: 492,964.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,811.20 : 1,091,716.80 = 328,643.20 : x
  2. Step 2: Convert to fraction form
    727,811.20/1,091,716.80 = 328,643.20/x
  3. Step 3: Cross multiply
    727,811.20x = 1,091,716.80 × 328,643.20
  4. Step 4: Simplify right side
    727,811.20x = 358,785,302,645.76
  5. Step 5: Solve for x
    x = 358,785,302,645.76/727,811.20
  6. Step 6: Final answer
    x = 492,964.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.