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Finding the Fourth Proportional to 605,429.80, 907,707.30 and 339,271.90

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Solution

The fourth proportional to 605,429.80, 907,707.30 and 339,271.90 is: 508,662.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,429.80 : 907,707.30 = 339,271.90 : x
  2. Step 2: Convert to fraction form
    605,429.80/907,707.30 = 339,271.90/x
  3. Step 3: Cross multiply
    605,429.80x = 907,707.30 × 339,271.90
  4. Step 4: Simplify right side
    605,429.80x = 307,959,580,314.87
  5. Step 5: Solve for x
    x = 307,959,580,314.87/605,429.80
  6. Step 6: Final answer
    x = 508,662.74

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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.