Home / 666,238,754.48-919,438,212.84-368,881,002.80

Finding the Fourth Proportional to 666,238,754.48, 919,438,212.84 and 368,881,002.80

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Solution

The fourth proportional to 666,238,754.48, 919,438,212.84 and 368,881,002.80 is: 509,071,691.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,238,754.48 : 919,438,212.84 = 368,881,002.80 : x
  2. Step 2: Convert to fraction form
    666,238,754.48/919,438,212.84 = 368,881,002.80/x
  3. Step 3: Cross multiply
    666,238,754.48x = 919,438,212.84 × 368,881,002.80
  4. Step 4: Simplify right side
    666,238,754.48x = 339,163,289,965,059,072
  5. Step 5: Solve for x
    x = 339,163,289,965,059,072/666,238,754.48
  6. Step 6: Final answer
    x = 509,071,691.92

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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.