Home / 918,051.20-1,377,076.80-666,108.80

Finding the Fourth Proportional to 918,051.20, 1,377,076.80 and 666,108.80

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Solution

The fourth proportional to 918,051.20, 1,377,076.80 and 666,108.80 is: 999,163.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,051.20 : 1,377,076.80 = 666,108.80 : x
  2. Step 2: Convert to fraction form
    918,051.20/1,377,076.80 = 666,108.80/x
  3. Step 3: Cross multiply
    918,051.20x = 1,377,076.80 × 666,108.80
  4. Step 4: Simplify right side
    918,051.20x = 917,282,974,755.84
  5. Step 5: Solve for x
    x = 917,282,974,755.84/918,051.20
  6. Step 6: Final answer
    x = 999,163.20

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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.