Home / 645,038,958.71-890,229,333.93-366,622,333.22

Finding the Fourth Proportional to 645,038,958.71, 890,229,333.93 and 366,622,333.22

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Solution

The fourth proportional to 645,038,958.71, 890,229,333.93 and 366,622,333.22 is: 505,981,772.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,038,958.71 : 890,229,333.93 = 366,622,333.22 : x
  2. Step 2: Convert to fraction form
    645,038,958.71/890,229,333.93 = 366,622,333.22/x
  3. Step 3: Cross multiply
    645,038,958.71x = 890,229,333.93 × 366,622,333.22
  4. Step 4: Simplify right side
    645,038,958.71x = 326,377,955,506,303,104
  5. Step 5: Solve for x
    x = 326,377,955,506,303,104/645,038,958.71
  6. Step 6: Final answer
    x = 505,981,772.26

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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.