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Finding the Fourth Proportional to 486,889,437.60, 671,976,326.16 and 301,310,238.24

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Solution

The fourth proportional to 486,889,437.60, 671,976,326.16 and 301,310,238.24 is: 415,850,768.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,889,437.60 : 671,976,326.16 = 301,310,238.24 : x
  2. Step 2: Convert to fraction form
    486,889,437.60/671,976,326.16 = 301,310,238.24/x
  3. Step 3: Cross multiply
    486,889,437.60x = 671,976,326.16 × 301,310,238.24
  4. Step 4: Simplify right side
    486,889,437.60x = 202,473,346,926,909,536
  5. Step 5: Solve for x
    x = 202,473,346,926,909,536/486,889,437.60
  6. Step 6: Final answer
    x = 415,850,768.76

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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.