Home / 638,692,755.40-958,039,133.10-348,455,110.60

Finding the Fourth Proportional to 638,692,755.40, 958,039,133.10 and 348,455,110.60

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Solution

The fourth proportional to 638,692,755.40, 958,039,133.10 and 348,455,110.60 is: 522,682,665.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,692,755.40 : 958,039,133.10 = 348,455,110.60 : x
  2. Step 2: Convert to fraction form
    638,692,755.40/958,039,133.10 = 348,455,110.60/x
  3. Step 3: Cross multiply
    638,692,755.40x = 958,039,133.10 × 348,455,110.60
  4. Step 4: Simplify right side
    638,692,755.40x = 333,833,632,083,488,640
  5. Step 5: Solve for x
    x = 333,833,632,083,488,640/638,692,755.40
  6. Step 6: Final answer
    x = 522,682,665.90

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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.