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Finding the Fourth Proportional to 989,763.20, 1,484,644.80 and 737,820.80

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Solution

The fourth proportional to 989,763.20, 1,484,644.80 and 737,820.80 is: 1,106,731.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,763.20 : 1,484,644.80 = 737,820.80 : x
  2. Step 2: Convert to fraction form
    989,763.20/1,484,644.80 = 737,820.80/x
  3. Step 3: Cross multiply
    989,763.20x = 1,484,644.80 × 737,820.80
  4. Step 4: Simplify right side
    989,763.20x = 1,095,401,814,051.84
  5. Step 5: Solve for x
    x = 1,095,401,814,051.84/989,763.20
  6. Step 6: Final answer
    x = 1,106,731.20

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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.