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Finding the Fourth Proportional to 1,292,983.74, 1,784,248.83 and 741,671.01

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Solution

The fourth proportional to 1,292,983.74, 1,784,248.83 and 741,671.01 is: 1,023,466.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,292,983.74 : 1,784,248.83 = 741,671.01 : x
  2. Step 2: Convert to fraction form
    1,292,983.74/1,784,248.83 = 741,671.01/x
  3. Step 3: Cross multiply
    1,292,983.74x = 1,784,248.83 × 741,671.01
  4. Step 4: Simplify right side
    1,292,983.74x = 1,323,325,631,837.42
  5. Step 5: Solve for x
    x = 1,323,325,631,837.42/1,292,983.74
  6. Step 6: Final answer
    x = 1,023,466.57

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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.