Home / 515,538,910.55-711,422,665.70-292,515,792.13

Finding the Fourth Proportional to 515,538,910.55, 711,422,665.70 and 292,515,792.13

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Solution

The fourth proportional to 515,538,910.55, 711,422,665.70 and 292,515,792.13 is: 403,659,860.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,538,910.55 : 711,422,665.70 = 292,515,792.13 : x
  2. Step 2: Convert to fraction form
    515,538,910.55/711,422,665.70 = 292,515,792.13/x
  3. Step 3: Cross multiply
    515,538,910.55x = 711,422,665.70 × 292,515,792.13
  4. Step 4: Simplify right side
    515,538,910.55x = 208,102,364,592,717,952
  5. Step 5: Solve for x
    x = 208,102,364,592,717,952/515,538,910.55
  6. Step 6: Final answer
    x = 403,659,860.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.