Home / 513,820,331.22-709,072,759.26-278,870,995.32

Finding the Fourth Proportional to 513,820,331.22, 709,072,759.26 and 278,870,995.32

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Solution

The fourth proportional to 513,820,331.22, 709,072,759.26 and 278,870,995.32 is: 384,842,354.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,820,331.22 : 709,072,759.26 = 278,870,995.32 : x
  2. Step 2: Convert to fraction form
    513,820,331.22/709,072,759.26 = 278,870,995.32/x
  3. Step 3: Cross multiply
    513,820,331.22x = 709,072,759.26 × 278,870,995.32
  4. Step 4: Simplify right side
    513,820,331.22x = 197,739,826,129,134,944
  5. Step 5: Solve for x
    x = 197,739,826,129,134,944/513,820,331.22
  6. Step 6: Final answer
    x = 384,842,354.64

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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.