Home / 513,820,121.13-709,072,467.39-278,870,784.66

Finding the Fourth Proportional to 513,820,121.13, 709,072,467.39 and 278,870,784.66

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Solution

The fourth proportional to 513,820,121.13, 709,072,467.39 and 278,870,784.66 is: 384,842,062.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,820,121.13 : 709,072,467.39 = 278,870,784.66 : x
  2. Step 2: Convert to fraction form
    513,820,121.13/709,072,467.39 = 278,870,784.66/x
  3. Step 3: Cross multiply
    513,820,121.13x = 709,072,467.39 × 278,870,784.66
  4. Step 4: Simplify right side
    513,820,121.13x = 197,739,595,361,851,584
  5. Step 5: Solve for x
    x = 197,739,595,361,851,584/513,820,121.13
  6. Step 6: Final answer
    x = 384,842,062.87

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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.