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Finding the Fourth Proportional to 666,750.18, 920,016.32 and 404,969.36

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Solution

The fourth proportional to 666,750.18, 920,016.32 and 404,969.36 is: 558,797.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,750.18 : 920,016.32 = 404,969.36 : x
  2. Step 2: Convert to fraction form
    666,750.18/920,016.32 = 404,969.36/x
  3. Step 3: Cross multiply
    666,750.18x = 920,016.32 × 404,969.36
  4. Step 4: Simplify right side
    666,750.18x = 372,578,420,299.96
  5. Step 5: Solve for x
    x = 372,578,420,299.96/666,750.18
  6. Step 6: Final answer
    x = 558,797.63

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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.