Home / 811,094,481.20-1,216,641,721.80-265,853,802.80

Finding the Fourth Proportional to 811,094,481.20, 1,216,641,721.80 and 265,853,802.80

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Solution

The fourth proportional to 811,094,481.20, 1,216,641,721.80 and 265,853,802.80 is: 398,780,704.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,094,481.20 : 1,216,641,721.80 = 265,853,802.80 : x
  2. Step 2: Convert to fraction form
    811,094,481.20/1,216,641,721.80 = 265,853,802.80/x
  3. Step 3: Cross multiply
    811,094,481.20x = 1,216,641,721.80 × 265,853,802.80
  4. Step 4: Simplify right side
    811,094,481.20x = 323,448,828,385,669,632
  5. Step 5: Solve for x
    x = 323,448,828,385,669,632/811,094,481.20
  6. Step 6: Final answer
    x = 398,780,704.20

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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.