Home / 870,038,712.72-1,305,022,675.68-214,973,242.20

Finding the Fourth Proportional to 870,038,712.72, 1,305,022,675.68 and 214,973,242.20

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Solution

The fourth proportional to 870,038,712.72, 1,305,022,675.68 and 214,973,242.20 is: 322,451,118.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,038,712.72 : 1,305,022,675.68 = 214,973,242.20 : x
  2. Step 2: Convert to fraction form
    870,038,712.72/1,305,022,675.68 = 214,973,242.20/x
  3. Step 3: Cross multiply
    870,038,712.72x = 1,305,022,675.68 × 214,973,242.20
  4. Step 4: Simplify right side
    870,038,712.72x = 280,544,955,735,448,704
  5. Step 5: Solve for x
    x = 280,544,955,735,448,704/870,038,712.72
  6. Step 6: Final answer
    x = 322,451,118.13

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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.