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Finding the Fourth Proportional to 817,482.80, 1,228,297.80 and 726,244.40

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Solution

The fourth proportional to 817,482.80, 1,228,297.80 and 726,244.40 is: 1,091,208.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,482.80 : 1,228,297.80 = 726,244.40 : x
  2. Step 2: Convert to fraction form
    817,482.80/1,228,297.80 = 726,244.40/x
  3. Step 3: Cross multiply
    817,482.80x = 1,228,297.80 × 726,244.40
  4. Step 4: Simplify right side
    817,482.80x = 892,044,398,782.32
  5. Step 5: Solve for x
    x = 892,044,398,782.32/817,482.80
  6. Step 6: Final answer
    x = 1,091,208.77

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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.