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Finding the Fourth Proportional to 604,887.80, 907,623.30 and 427,011.80

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Solution

The fourth proportional to 604,887.80, 907,623.30 and 427,011.80 is: 640,723.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,887.80 : 907,623.30 = 427,011.80 : x
  2. Step 2: Convert to fraction form
    604,887.80/907,623.30 = 427,011.80/x
  3. Step 3: Cross multiply
    604,887.80x = 907,623.30 × 427,011.80
  4. Step 4: Simplify right side
    604,887.80x = 387,565,859,054.94
  5. Step 5: Solve for x
    x = 387,565,859,054.94/604,887.80
  6. Step 6: Final answer
    x = 640,723.55

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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.