Home / 919,883.40-1,377,856.80-820,156.20

Finding the Fourth Proportional to 919,883.40, 1,377,856.80 and 820,156.20

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Solution

The fourth proportional to 919,883.40, 1,377,856.80 and 820,156.20 is: 1,228,479.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,883.40 : 1,377,856.80 = 820,156.20 : x
  2. Step 2: Convert to fraction form
    919,883.40/1,377,856.80 = 820,156.20/x
  3. Step 3: Cross multiply
    919,883.40x = 1,377,856.80 × 820,156.20
  4. Step 4: Simplify right side
    919,883.40x = 1,130,057,797,232.16
  5. Step 5: Solve for x
    x = 1,130,057,797,232.16/919,883.40
  6. Step 6: Final answer
    x = 1,228,479.39

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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.