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Finding the Fourth Proportional to 402,083.40, 603,125.10 and 384,368.70

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Solution

The fourth proportional to 402,083.40, 603,125.10 and 384,368.70 is: 576,553.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,083.40 : 603,125.10 = 384,368.70 : x
  2. Step 2: Convert to fraction form
    402,083.40/603,125.10 = 384,368.70/x
  3. Step 3: Cross multiply
    402,083.40x = 603,125.10 × 384,368.70
  4. Step 4: Simplify right side
    402,083.40x = 231,822,410,624.37
  5. Step 5: Solve for x
    x = 231,822,410,624.37/402,083.40
  6. Step 6: Final answer
    x = 576,553.05

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Why These Related Problems?

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