Home / 639,231,667.40-958,847,501.10-432,607,406.60

Finding the Fourth Proportional to 639,231,667.40, 958,847,501.10 and 432,607,406.60

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Solution

The fourth proportional to 639,231,667.40, 958,847,501.10 and 432,607,406.60 is: 648,911,109.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,231,667.40 : 958,847,501.10 = 432,607,406.60 : x
  2. Step 2: Convert to fraction form
    639,231,667.40/958,847,501.10 = 432,607,406.60/x
  3. Step 3: Cross multiply
    639,231,667.40x = 958,847,501.10 × 432,607,406.60
  4. Step 4: Simplify right side
    639,231,667.40x = 414,804,530,775,761,664
  5. Step 5: Solve for x
    x = 414,804,530,775,761,664/639,231,667.40
  6. Step 6: Final answer
    x = 648,911,109.90

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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.