Home / 520,509,421.76-780,765,957.59-132,332,293.94

Finding the Fourth Proportional to 520,509,421.76, 780,765,957.59 and 132,332,293.94

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Solution

The fourth proportional to 520,509,421.76, 780,765,957.59 and 132,332,293.94 is: 198,498,904.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,509,421.76 : 780,765,957.59 = 132,332,293.94 : x
  2. Step 2: Convert to fraction form
    520,509,421.76/780,765,957.59 = 132,332,293.94/x
  3. Step 3: Cross multiply
    520,509,421.76x = 780,765,957.59 × 132,332,293.94
  4. Step 4: Simplify right side
    520,509,421.76x = 103,320,550,193,579,968
  5. Step 5: Solve for x
    x = 103,320,550,193,579,968/520,509,421.76
  6. Step 6: Final answer
    x = 198,498,904.87

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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.