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Finding the Fourth Proportional to 605,041.40, 907,562.10 and 339,620.60

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Solution

The fourth proportional to 605,041.40, 907,562.10 and 339,620.60 is: 509,430.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,041.40 : 907,562.10 = 339,620.60 : x
  2. Step 2: Convert to fraction form
    605,041.40/907,562.10 = 339,620.60/x
  3. Step 3: Cross multiply
    605,041.40x = 907,562.10 × 339,620.60
  4. Step 4: Simplify right side
    605,041.40x = 308,226,784,939.26
  5. Step 5: Solve for x
    x = 308,226,784,939.26/605,041.40
  6. Step 6: Final answer
    x = 509,430.90

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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.