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Finding the Fourth Proportional to 656,985.76, 985,532.40 and 207,737.44

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Solution

The fourth proportional to 656,985.76, 985,532.40 and 207,737.44 is: 311,623.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,985.76 : 985,532.40 = 207,737.44 : x
  2. Step 2: Convert to fraction form
    656,985.76/985,532.40 = 207,737.44/x
  3. Step 3: Cross multiply
    656,985.76x = 985,532.40 × 207,737.44
  4. Step 4: Simplify right side
    656,985.76x = 204,731,977,813.06
  5. Step 5: Solve for x
    x = 204,731,977,813.06/656,985.76
  6. Step 6: Final answer
    x = 311,623.16

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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.