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Finding the Fourth Proportional to 475,487,999.40, 713,231,999.10 and 475,487,999.40

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Solution

The fourth proportional to 475,487,999.40, 713,231,999.10 and 475,487,999.40 is: 713,231,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,487,999.40 : 713,231,999.10 = 475,487,999.40 : x
  2. Step 2: Convert to fraction form
    475,487,999.40/713,231,999.10 = 475,487,999.40/x
  3. Step 3: Cross multiply
    475,487,999.40x = 713,231,999.10 × 475,487,999.40
  4. Step 4: Simplify right side
    475,487,999.40x = 339,133,256,360,121,600
  5. Step 5: Solve for x
    x = 339,133,256,360,121,600/475,487,999.40
  6. Step 6: Final answer
    x = 713,231,999.10

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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.