Home / 645,038,899.96-890,229,252.87-366,622,274.47

Finding the Fourth Proportional to 645,038,899.96, 890,229,252.87 and 366,622,274.47

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Solution

The fourth proportional to 645,038,899.96, 890,229,252.87 and 366,622,274.47 is: 505,981,691.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,038,899.96 : 890,229,252.87 = 366,622,274.47 : x
  2. Step 2: Convert to fraction form
    645,038,899.96/890,229,252.87 = 366,622,274.47/x
  3. Step 3: Cross multiply
    645,038,899.96x = 890,229,252.87 × 366,622,274.47
  4. Step 4: Simplify right side
    645,038,899.96x = 326,377,873,486,928,192
  5. Step 5: Solve for x
    x = 326,377,873,486,928,192/645,038,899.96
  6. Step 6: Final answer
    x = 505,981,691.19

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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.