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Finding the Fourth Proportional to 400,032,208.80, 600,081,490.80 and 127,395,280.80

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Solution

The fourth proportional to 400,032,208.80, 600,081,490.80 and 127,395,280.80 is: 191,103,487.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,032,208.80 : 600,081,490.80 = 127,395,280.80 : x
  2. Step 2: Convert to fraction form
    400,032,208.80/600,081,490.80 = 127,395,280.80/x
  3. Step 3: Cross multiply
    400,032,208.80x = 600,081,490.80 × 127,395,280.80
  4. Step 4: Simplify right side
    400,032,208.80x = 76,447,550,023,348,608
  5. Step 5: Solve for x
    x = 76,447,550,023,348,608/400,032,208.80
  6. Step 6: Final answer
    x = 191,103,487.02

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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.