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Finding the Fourth Proportional to 666,722.88, 920,042.28 and 364,858.56

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Solution

The fourth proportional to 666,722.88, 920,042.28 and 364,858.56 is: 503,485.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,722.88 : 920,042.28 = 364,858.56 : x
  2. Step 2: Convert to fraction form
    666,722.88/920,042.28 = 364,858.56/x
  3. Step 3: Cross multiply
    666,722.88x = 920,042.28 × 364,858.56
  4. Step 4: Simplify right side
    666,722.88x = 335,685,301,419.92
  5. Step 5: Solve for x
    x = 335,685,301,419.92/666,722.88
  6. Step 6: Final answer
    x = 503,485.50

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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.