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Finding the Fourth Proportional to 666,690.74, 920,026.22 and 360,760.44

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Solution

The fourth proportional to 666,690.74, 920,026.22 and 360,760.44 is: 497,845.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,690.74 : 920,026.22 = 360,760.44 : x
  2. Step 2: Convert to fraction form
    666,690.74/920,026.22 = 360,760.44/x
  3. Step 3: Cross multiply
    666,690.74x = 920,026.22 × 360,760.44
  4. Step 4: Simplify right side
    666,690.74x = 331,909,062,134.94
  5. Step 5: Solve for x
    x = 331,909,062,134.94/666,690.74
  6. Step 6: Final answer
    x = 497,845.62

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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.