Home / 285,437,708.60-428,120,039.99-91,332,885.56

Finding the Fourth Proportional to 285,437,708.60, 428,120,039.99 and 91,332,885.56

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Solution

The fourth proportional to 285,437,708.60, 428,120,039.99 and 91,332,885.56 is: 136,987,641.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,437,708.60 : 428,120,039.99 = 91,332,885.56 : x
  2. Step 2: Convert to fraction form
    285,437,708.60/428,120,039.99 = 91,332,885.56/x
  3. Step 3: Cross multiply
    285,437,708.60x = 428,120,039.99 × 91,332,885.56
  4. Step 4: Simplify right side
    285,437,708.60x = 39,101,438,616,437,032
  5. Step 5: Solve for x
    x = 39,101,438,616,437,032/285,437,708.60
  6. Step 6: Final answer
    x = 136,987,641.92

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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.