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Finding the Fourth Proportional to 604,911.20, 907,366.80 and 289,983.20

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Solution

The fourth proportional to 604,911.20, 907,366.80 and 289,983.20 is: 434,974.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,911.20 : 907,366.80 = 289,983.20 : x
  2. Step 2: Convert to fraction form
    604,911.20/907,366.80 = 289,983.20/x
  3. Step 3: Cross multiply
    604,911.20x = 907,366.80 × 289,983.20
  4. Step 4: Simplify right side
    604,911.20x = 263,121,128,237.76
  5. Step 5: Solve for x
    x = 263,121,128,237.76/604,911.20
  6. Step 6: Final answer
    x = 434,974.80

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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.