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Finding the Fourth Proportional to 604,928.20, 908,048.40 and 339,207.70

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Solution

The fourth proportional to 604,928.20, 908,048.40 and 339,207.70 is: 509,179.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,928.20 : 908,048.40 = 339,207.70 : x
  2. Step 2: Convert to fraction form
    604,928.20/908,048.40 = 339,207.70/x
  3. Step 3: Cross multiply
    604,928.20x = 908,048.40 × 339,207.70
  4. Step 4: Simplify right side
    604,928.20x = 308,017,009,252.68
  5. Step 5: Solve for x
    x = 308,017,009,252.68/604,928.20
  6. Step 6: Final answer
    x = 509,179.45

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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.