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Finding the Fourth Proportional to 888,864.96, 1,333,428.56 and 257,696.76

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Solution

The fourth proportional to 888,864.96, 1,333,428.56 and 257,696.76 is: 386,583.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,864.96 : 1,333,428.56 = 257,696.76 : x
  2. Step 2: Convert to fraction form
    888,864.96/1,333,428.56 = 257,696.76/x
  3. Step 3: Cross multiply
    888,864.96x = 1,333,428.56 × 257,696.76
  4. Step 4: Simplify right side
    888,864.96x = 343,620,219,603.47
  5. Step 5: Solve for x
    x = 343,620,219,603.47/888,864.96
  6. Step 6: Final answer
    x = 386,583.15

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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.