Home / 856,712.70-1,285,179.21-287,848.08

Finding the Fourth Proportional to 856,712.70, 1,285,179.21 and 287,848.08

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Solution

The fourth proportional to 856,712.70, 1,285,179.21 and 287,848.08 is: 431,809.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,712.70 : 1,285,179.21 = 287,848.08 : x
  2. Step 2: Convert to fraction form
    856,712.70/1,285,179.21 = 287,848.08/x
  3. Step 3: Cross multiply
    856,712.70x = 1,285,179.21 × 287,848.08
  4. Step 4: Simplify right side
    856,712.70x = 369,936,368,054.42
  5. Step 5: Solve for x
    x = 369,936,368,054.42/856,712.70
  6. Step 6: Final answer
    x = 431,809.13

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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.