Home / 500,095,990.80-690,132,467.30-280,079,416.80

Finding the Fourth Proportional to 500,095,990.80, 690,132,467.30 and 280,079,416.80

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Solution

The fourth proportional to 500,095,990.80, 690,132,467.30 and 280,079,416.80 is: 386,509,595.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,095,990.80 : 690,132,467.30 = 280,079,416.80 : x
  2. Step 2: Convert to fraction form
    500,095,990.80/690,132,467.30 = 280,079,416.80/x
  3. Step 3: Cross multiply
    500,095,990.80x = 690,132,467.30 × 280,079,416.80
  4. Step 4: Simplify right side
    500,095,990.80x = 193,291,898,954,728,672
  5. Step 5: Solve for x
    x = 193,291,898,954,728,672/500,095,990.80
  6. Step 6: Final answer
    x = 386,509,595.18

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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.