Home / 878,320.13-1,317,611.41-279,300.83

Finding the Fourth Proportional to 878,320.13, 1,317,611.41 and 279,300.83

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Solution

The fourth proportional to 878,320.13, 1,317,611.41 and 279,300.83 is: 418,992.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    878,320.13 : 1,317,611.41 = 279,300.83 : x
  2. Step 2: Convert to fraction form
    878,320.13/1,317,611.41 = 279,300.83/x
  3. Step 3: Cross multiply
    878,320.13x = 1,317,611.41 × 279,300.83
  4. Step 4: Simplify right side
    878,320.13x = 368,009,953,144.16
  5. Step 5: Solve for x
    x = 368,009,953,144.16/878,320.13
  6. Step 6: Final answer
    x = 418,992.96

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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.