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Finding the Fourth Proportional to 666,927.92, 920,016.12 and 451,994.48

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Solution

The fourth proportional to 666,927.92, 920,016.12 and 451,994.48 is: 623,518.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,927.92 : 920,016.12 = 451,994.48 : x
  2. Step 2: Convert to fraction form
    666,927.92/920,016.12 = 451,994.48/x
  3. Step 3: Cross multiply
    666,927.92x = 920,016.12 × 451,994.48
  4. Step 4: Simplify right side
    666,927.92x = 415,842,207,751.02
  5. Step 5: Solve for x
    x = 415,842,207,751.02/666,927.92
  6. Step 6: Final answer
    x = 623,518.97

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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.