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Finding the Fourth Proportional to 1,383,398, 1,909,089.32 and 747,494

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Solution

The fourth proportional to 1,383,398, 1,909,089.32 and 747,494 is: 1,031,541.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383,398 : 1,909,089.32 = 747,494 : x
  2. Step 2: Convert to fraction form
    1,383,398/1,909,089.32 = 747,494/x
  3. Step 3: Cross multiply
    1,383,398x = 1,909,089.32 × 747,494
  4. Step 4: Simplify right side
    1,383,398x = 1,427,032,812,164.08
  5. Step 5: Solve for x
    x = 1,427,032,812,164.08/1,383,398
  6. Step 6: Final answer
    x = 1,031,541.76

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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.