Home / 645,038,956.71-890,229,331.17-366,622,331.22

Finding the Fourth Proportional to 645,038,956.71, 890,229,331.17 and 366,622,331.22

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Solution

The fourth proportional to 645,038,956.71, 890,229,331.17 and 366,622,331.22 is: 505,981,769.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,038,956.71 : 890,229,331.17 = 366,622,331.22 : x
  2. Step 2: Convert to fraction form
    645,038,956.71/890,229,331.17 = 366,622,331.22/x
  3. Step 3: Cross multiply
    645,038,956.71x = 890,229,331.17 × 366,622,331.22
  4. Step 4: Simplify right side
    645,038,956.71x = 326,377,952,713,966,848
  5. Step 5: Solve for x
    x = 326,377,952,713,966,848/645,038,956.71
  6. Step 6: Final answer
    x = 505,981,769.50

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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.