Home / 681,103.41-939,927.51-390,727.65

Finding the Fourth Proportional to 681,103.41, 939,927.51 and 390,727.65

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Solution

The fourth proportional to 681,103.41, 939,927.51 and 390,727.65 is: 539,206.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,103.41 : 939,927.51 = 390,727.65 : x
  2. Step 2: Convert to fraction form
    681,103.41/939,927.51 = 390,727.65/x
  3. Step 3: Cross multiply
    681,103.41x = 939,927.51 × 390,727.65
  4. Step 4: Simplify right side
    681,103.41x = 367,255,665,199.01
  5. Step 5: Solve for x
    x = 367,255,665,199.01/681,103.41
  6. Step 6: Final answer
    x = 539,206.91

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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.