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Finding the Fourth Proportional to 604,901.80, 907,644.30 and 427,025.80

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Solution

The fourth proportional to 604,901.80, 907,644.30 and 427,025.80 is: 640,744.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,901.80 : 907,644.30 = 427,025.80 : x
  2. Step 2: Convert to fraction form
    604,901.80/907,644.30 = 427,025.80/x
  3. Step 3: Cross multiply
    604,901.80x = 907,644.30 × 427,025.80
  4. Step 4: Simplify right side
    604,901.80x = 387,587,533,322.94
  5. Step 5: Solve for x
    x = 387,587,533,322.94/604,901.80
  6. Step 6: Final answer
    x = 640,744.55

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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.