Home / 1,281,066.14-1,921,832.76-428,056.58

Finding the Fourth Proportional to 1,281,066.14, 1,921,832.76 and 428,056.58

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Solution

The fourth proportional to 1,281,066.14, 1,921,832.76 and 428,056.58 is: 642,162.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,281,066.14 : 1,921,832.76 = 428,056.58 : x
  2. Step 2: Convert to fraction form
    1,281,066.14/1,921,832.76 = 428,056.58/x
  3. Step 3: Cross multiply
    1,281,066.14x = 1,921,832.76 × 428,056.58
  4. Step 4: Simplify right side
    1,281,066.14x = 822,653,158,577.56
  5. Step 5: Solve for x
    x = 822,653,158,577.56/1,281,066.14
  6. Step 6: Final answer
    x = 642,162.91

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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.