Home / 1,013,571.20-1,520,356.80-978,141.80

Finding the Fourth Proportional to 1,013,571.20, 1,520,356.80 and 978,141.80

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Solution

The fourth proportional to 1,013,571.20, 1,520,356.80 and 978,141.80 is: 1,467,212.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,013,571.20 : 1,520,356.80 = 978,141.80 : x
  2. Step 2: Convert to fraction form
    1,013,571.20/1,520,356.80 = 978,141.80/x
  3. Step 3: Cross multiply
    1,013,571.20x = 1,520,356.80 × 978,141.80
  4. Step 4: Simplify right side
    1,013,571.20x = 1,487,124,536,994.24
  5. Step 5: Solve for x
    x = 1,487,124,536,994.24/1,013,571.20
  6. Step 6: Final answer
    x = 1,467,212.70

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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.