Home / 380,931.86-571,402.65-262,571.42

Finding the Fourth Proportional to 380,931.86, 571,402.65 and 262,571.42

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Solution

The fourth proportional to 380,931.86, 571,402.65 and 262,571.42 is: 393,860.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,931.86 : 571,402.65 = 262,571.42 : x
  2. Step 2: Convert to fraction form
    380,931.86/571,402.65 = 262,571.42/x
  3. Step 3: Cross multiply
    380,931.86x = 571,402.65 × 262,571.42
  4. Step 4: Simplify right side
    380,931.86x = 150,034,001,032.39
  5. Step 5: Solve for x
    x = 150,034,001,032.39/380,931.86
  6. Step 6: Final answer
    x = 393,860.47

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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.