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Finding the Fourth Proportional to 442,897.70, 664,346.55 and 400,907.30

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Solution

The fourth proportional to 442,897.70, 664,346.55 and 400,907.30 is: 601,360.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,897.70 : 664,346.55 = 400,907.30 : x
  2. Step 2: Convert to fraction form
    442,897.70/664,346.55 = 400,907.30/x
  3. Step 3: Cross multiply
    442,897.70x = 664,346.55 × 400,907.30
  4. Step 4: Simplify right side
    442,897.70x = 266,341,381,624.82
  5. Step 5: Solve for x
    x = 266,341,381,624.82/442,897.70
  6. Step 6: Final answer
    x = 601,360.95

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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.