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Finding the Fourth Proportional to 666,004.20, 999,006.30 and 589,021.80

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Solution

The fourth proportional to 666,004.20, 999,006.30 and 589,021.80 is: 883,532.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,004.20 : 999,006.30 = 589,021.80 : x
  2. Step 2: Convert to fraction form
    666,004.20/999,006.30 = 589,021.80/x
  3. Step 3: Cross multiply
    666,004.20x = 999,006.30 × 589,021.80
  4. Step 4: Simplify right side
    666,004.20x = 588,436,489,037.34
  5. Step 5: Solve for x
    x = 588,436,489,037.34/666,004.20
  6. Step 6: Final answer
    x = 883,532.70

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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.