Home / 870,038,385.93-1,305,022,186.40-214,972,916.21

Finding the Fourth Proportional to 870,038,385.93, 1,305,022,186.40 and 214,972,916.21

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Solution

The fourth proportional to 870,038,385.93, 1,305,022,186.40 and 214,972,916.21 is: 322,450,629.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,038,385.93 : 1,305,022,186.40 = 214,972,916.21 : x
  2. Step 2: Convert to fraction form
    870,038,385.93/1,305,022,186.40 = 214,972,916.21/x
  3. Step 3: Cross multiply
    870,038,385.93x = 1,305,022,186.40 × 214,972,916.21
  4. Step 4: Simplify right side
    870,038,385.93x = 280,544,425,129,158,240
  5. Step 5: Solve for x
    x = 280,544,425,129,158,240/870,038,385.93
  6. Step 6: Final answer
    x = 322,450,629.38

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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.