Home / 867,143,791.59-1,300,507,421.27-400,356,725.78

Finding the Fourth Proportional to 867,143,791.59, 1,300,507,421.27 and 400,356,725.78

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Solution

The fourth proportional to 867,143,791.59, 1,300,507,421.27 and 400,356,725.78 is: 600,438,933.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,143,791.59 : 1,300,507,421.27 = 400,356,725.78 : x
  2. Step 2: Convert to fraction form
    867,143,791.59/1,300,507,421.27 = 400,356,725.78/x
  3. Step 3: Cross multiply
    867,143,791.59x = 1,300,507,421.27 × 400,356,725.78
  4. Step 4: Simplify right side
    867,143,791.59x = 520,666,893,023,744,000
  5. Step 5: Solve for x
    x = 520,666,893,023,744,000/867,143,791.59
  6. Step 6: Final answer
    x = 600,438,933.05

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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.