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Finding the Fourth Proportional to 605,875.80, 908,813.70 and 437,914.20

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Solution

The fourth proportional to 605,875.80, 908,813.70 and 437,914.20 is: 656,871.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,875.80 : 908,813.70 = 437,914.20 : x
  2. Step 2: Convert to fraction form
    605,875.80/908,813.70 = 437,914.20/x
  3. Step 3: Cross multiply
    605,875.80x = 908,813.70 × 437,914.20
  4. Step 4: Simplify right side
    605,875.80x = 397,982,424,384.54
  5. Step 5: Solve for x
    x = 397,982,424,384.54/605,875.80
  6. Step 6: Final answer
    x = 656,871.30

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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.