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Finding the Fourth Proportional to 1,189,787.03, 1,641,925.92 and 645,922.92

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Solution

The fourth proportional to 1,189,787.03, 1,641,925.92 and 645,922.92 is: 891,384.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,787.03 : 1,641,925.92 = 645,922.92 : x
  2. Step 2: Convert to fraction form
    1,189,787.03/1,641,925.92 = 645,922.92/x
  3. Step 3: Cross multiply
    1,189,787.03x = 1,641,925.92 × 645,922.92
  4. Step 4: Simplify right side
    1,189,787.03x = 1,060,557,593,249.52
  5. Step 5: Solve for x
    x = 1,060,557,593,249.52/1,189,787.03
  6. Step 6: Final answer
    x = 891,384.40

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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.