Home / 839,790,317.70-1,259,685,476.55-426,541,796.10

Finding the Fourth Proportional to 839,790,317.70, 1,259,685,476.55 and 426,541,796.10

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Solution

The fourth proportional to 839,790,317.70, 1,259,685,476.55 and 426,541,796.10 is: 639,812,694.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,790,317.70 : 1,259,685,476.55 = 426,541,796.10 : x
  2. Step 2: Convert to fraction form
    839,790,317.70/1,259,685,476.55 = 426,541,796.10/x
  3. Step 3: Cross multiply
    839,790,317.70x = 1,259,685,476.55 × 426,541,796.10
  4. Step 4: Simplify right side
    839,790,317.70x = 537,308,505,688,721,472
  5. Step 5: Solve for x
    x = 537,308,505,688,721,472/839,790,317.70
  6. Step 6: Final answer
    x = 639,812,694.15

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.