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Finding the Fourth Proportional to 893,730.30, 1,339,840.17 and 387,908.70

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Solution

The fourth proportional to 893,730.30, 1,339,840.17 and 387,908.70 is: 581,535.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    893,730.30 : 1,339,840.17 = 387,908.70 : x
  2. Step 2: Convert to fraction form
    893,730.30/1,339,840.17 = 387,908.70/x
  3. Step 3: Cross multiply
    893,730.30x = 1,339,840.17 × 387,908.70
  4. Step 4: Simplify right side
    893,730.30x = 519,735,658,552.48
  5. Step 5: Solve for x
    x = 519,735,658,552.48/893,730.30
  6. Step 6: Final answer
    x = 581,535.23

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.