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Finding the Fourth Proportional to 18,949,798, 28,424,699.62 and 4,572,865.80

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Solution

The fourth proportional to 18,949,798, 28,424,699.62 and 4,572,865.80 is: 6,859,299.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,949,798 : 28,424,699.62 = 4,572,865.80 : x
  2. Step 2: Convert to fraction form
    18,949,798/28,424,699.62 = 4,572,865.80/x
  3. Step 3: Cross multiply
    18,949,798x = 28,424,699.62 × 4,572,865.80
  4. Step 4: Simplify right side
    18,949,798x = 129,982,336,767,571
  5. Step 5: Solve for x
    x = 129,982,336,767,571/18,949,798
  6. Step 6: Final answer
    x = 6,859,299.33

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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.