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Finding the Fourth Proportional to 679,197,696.64, 937,287,187.03 and 381,841,264.28

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Solution

The fourth proportional to 679,197,696.64, 937,287,187.03 and 381,841,264.28 is: 526,937,777.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,197,696.64 : 937,287,187.03 = 381,841,264.28 : x
  2. Step 2: Convert to fraction form
    679,197,696.64/937,287,187.03 = 381,841,264.28/x
  3. Step 3: Cross multiply
    679,197,696.64x = 937,287,187.03 × 381,841,264.28
  4. Step 4: Simplify right side
    679,197,696.64x = 357,894,924,484,293,568
  5. Step 5: Solve for x
    x = 357,894,924,484,293,568/679,197,696.64
  6. Step 6: Final answer
    x = 526,937,777.11

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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.