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Finding the Fourth Proportional to 662,861.61, 993,521.03 and 378,751.16

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Solution

The fourth proportional to 662,861.61, 993,521.03 and 378,751.16 is: 567,685.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,861.61 : 993,521.03 = 378,751.16 : x
  2. Step 2: Convert to fraction form
    662,861.61/993,521.03 = 378,751.16/x
  3. Step 3: Cross multiply
    662,861.61x = 993,521.03 × 378,751.16
  4. Step 4: Simplify right side
    662,861.61x = 376,297,243,186.94
  5. Step 5: Solve for x
    x = 376,297,243,186.94/662,861.61
  6. Step 6: Final answer
    x = 567,685.98

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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.