Home / 804,837.30-1,109,565.63-642,046.32

Finding the Fourth Proportional to 804,837.30, 1,109,565.63 and 642,046.32

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Solution

The fourth proportional to 804,837.30, 1,109,565.63 and 642,046.32 is: 885,138.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,837.30 : 1,109,565.63 = 642,046.32 : x
  2. Step 2: Convert to fraction form
    804,837.30/1,109,565.63 = 642,046.32/x
  3. Step 3: Cross multiply
    804,837.30x = 1,109,565.63 × 642,046.32
  4. Step 4: Simplify right side
    804,837.30x = 712,392,529,539.98
  5. Step 5: Solve for x
    x = 712,392,529,539.98/804,837.30
  6. Step 6: Final answer
    x = 885,138.56

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1.5x scale

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.