Home / 1,228,720.80-1,695,429.20-684,737.36

Finding the Fourth Proportional to 1,228,720.80, 1,695,429.20 and 684,737.36

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Solution

The fourth proportional to 1,228,720.80, 1,695,429.20 and 684,737.36 is: 944,823.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228,720.80 : 1,695,429.20 = 684,737.36 : x
  2. Step 2: Convert to fraction form
    1,228,720.80/1,695,429.20 = 684,737.36/x
  3. Step 3: Cross multiply
    1,228,720.80x = 1,695,429.20 × 684,737.36
  4. Step 4: Simplify right side
    1,228,720.80x = 1,160,923,714,474.91
  5. Step 5: Solve for x
    x = 1,160,923,714,474.91/1,228,720.80
  6. Step 6: Final answer
    x = 944,823.03

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.