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Finding the Fourth Proportional to 1,316,844.83, 1,817,393.42 and 743,921.93

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Solution

The fourth proportional to 1,316,844.83, 1,817,393.42 and 743,921.93 is: 1,026,695.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316,844.83 : 1,817,393.42 = 743,921.93 : x
  2. Step 2: Convert to fraction form
    1,316,844.83/1,817,393.42 = 743,921.93/x
  3. Step 3: Cross multiply
    1,316,844.83x = 1,817,393.42 × 743,921.93
  4. Step 4: Simplify right side
    1,316,844.83x = 1,351,998,816,856.09
  5. Step 5: Solve for x
    x = 1,351,998,816,856.09/1,316,844.83
  6. Step 6: Final answer
    x = 1,026,695.62

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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.