Home / 380,417.09-569,784.55-260,189.09

Finding the Fourth Proportional to 380,417.09, 569,784.55 and 260,189.09

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Solution

The fourth proportional to 380,417.09, 569,784.55 and 260,189.09 is: 389,708.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,417.09 : 569,784.55 = 260,189.09 : x
  2. Step 2: Convert to fraction form
    380,417.09/569,784.55 = 260,189.09/x
  3. Step 3: Cross multiply
    380,417.09x = 569,784.55 × 260,189.09
  4. Step 4: Simplify right side
    380,417.09x = 148,251,723,560.56
  5. Step 5: Solve for x
    x = 148,251,723,560.56/380,417.09
  6. Step 6: Final answer
    x = 389,708.37

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1.5x scale

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.