Home / 780,764,133.63-1,171,148,937.88-198,498,441.90

Finding the Fourth Proportional to 780,764,133.63, 1,171,148,937.88 and 198,498,441.90

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Solution

The fourth proportional to 780,764,133.63, 1,171,148,937.88 and 198,498,441.90 is: 297,748,358.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,764,133.63 : 1,171,148,937.88 = 198,498,441.90 : x
  2. Step 2: Convert to fraction form
    780,764,133.63/1,171,148,937.88 = 198,498,441.90/x
  3. Step 3: Cross multiply
    780,764,133.63x = 1,171,148,937.88 × 198,498,441.90
  4. Step 4: Simplify right side
    780,764,133.63x = 232,471,239,402,019,904
  5. Step 5: Solve for x
    x = 232,471,239,402,019,904/780,764,133.63
  6. Step 6: Final answer
    x = 297,748,358.80

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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.