Home / 811,976.80-1,215,632.40-497,048.80

Finding the Fourth Proportional to 811,976.80, 1,215,632.40 and 497,048.80

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Solution

The fourth proportional to 811,976.80, 1,215,632.40 and 497,048.80 is: 744,145.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,976.80 : 1,215,632.40 = 497,048.80 : x
  2. Step 2: Convert to fraction form
    811,976.80/1,215,632.40 = 497,048.80/x
  3. Step 3: Cross multiply
    811,976.80x = 1,215,632.40 × 497,048.80
  4. Step 4: Simplify right side
    811,976.80x = 604,228,625,661.12
  5. Step 5: Solve for x
    x = 604,228,625,661.12/811,976.80
  6. Step 6: Final answer
    x = 744,145.18

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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.