Home / 867,143,778.14-1,300,507,401.06-400,356,712.28

Finding the Fourth Proportional to 867,143,778.14, 1,300,507,401.06 and 400,356,712.28

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Solution

The fourth proportional to 867,143,778.14, 1,300,507,401.06 and 400,356,712.28 is: 600,438,912.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,143,778.14 : 1,300,507,401.06 = 400,356,712.28 : x
  2. Step 2: Convert to fraction form
    867,143,778.14/1,300,507,401.06 = 400,356,712.28/x
  3. Step 3: Cross multiply
    867,143,778.14x = 1,300,507,401.06 × 400,356,712.28
  4. Step 4: Simplify right side
    867,143,778.14x = 520,666,867,377,686,400
  5. Step 5: Solve for x
    x = 520,666,867,377,686,400/867,143,778.14
  6. Step 6: Final answer
    x = 600,438,912.79

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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.