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Finding the Fourth Proportional to 400,666.70, 601,000.05 and 397,901.90

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Solution

The fourth proportional to 400,666.70, 601,000.05 and 397,901.90 is: 596,852.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,666.70 : 601,000.05 = 397,901.90 : x
  2. Step 2: Convert to fraction form
    400,666.70/601,000.05 = 397,901.90/x
  3. Step 3: Cross multiply
    400,666.70x = 601,000.05 × 397,901.90
  4. Step 4: Simplify right side
    400,666.70x = 239,139,061,795.10
  5. Step 5: Solve for x
    x = 239,139,061,795.10/400,666.70
  6. Step 6: Final answer
    x = 596,852.85

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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.