Home / 512,784,095.40-769,157,480.70-205,992,901.80

Finding the Fourth Proportional to 512,784,095.40, 769,157,480.70 and 205,992,901.80

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Solution

The fourth proportional to 512,784,095.40, 769,157,480.70 and 205,992,901.80 is: 308,981,855.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,784,095.40 : 769,157,480.70 = 205,992,901.80 : x
  2. Step 2: Convert to fraction form
    512,784,095.40/769,157,480.70 = 205,992,901.80/x
  3. Step 3: Cross multiply
    512,784,095.40x = 769,157,480.70 × 205,992,901.80
  4. Step 4: Simplify right side
    512,784,095.40x = 158,440,981,390,570,528
  5. Step 5: Solve for x
    x = 158,440,981,390,570,528/512,784,095.40
  6. Step 6: Final answer
    x = 308,981,855.74

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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.