Home / 717,491,749.40-990,138,608.34-387,466,859.24

Finding the Fourth Proportional to 717,491,749.40, 990,138,608.34 and 387,466,859.24

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Solution

The fourth proportional to 717,491,749.40, 990,138,608.34 and 387,466,859.24 is: 534,704,262.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,491,749.40 : 990,138,608.34 = 387,466,859.24 : x
  2. Step 2: Convert to fraction form
    717,491,749.40/990,138,608.34 = 387,466,859.24/x
  3. Step 3: Cross multiply
    717,491,749.40x = 990,138,608.34 × 387,466,859.24
  4. Step 4: Simplify right side
    717,491,749.40x = 383,645,896,785,764,288
  5. Step 5: Solve for x
    x = 383,645,896,785,764,288/717,491,749.40
  6. Step 6: Final answer
    x = 534,704,262.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.