Home / 500,095,993.22-690,132,470.65-280,079,419.22

Finding the Fourth Proportional to 500,095,993.22, 690,132,470.65 and 280,079,419.22

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Solution

The fourth proportional to 500,095,993.22, 690,132,470.65 and 280,079,419.22 is: 386,509,598.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,095,993.22 : 690,132,470.65 = 280,079,419.22 : x
  2. Step 2: Convert to fraction form
    500,095,993.22/690,132,470.65 = 280,079,419.22/x
  3. Step 3: Cross multiply
    500,095,993.22x = 690,132,470.65 × 280,079,419.22
  4. Step 4: Simplify right side
    500,095,993.22x = 193,291,901,564,515,712
  5. Step 5: Solve for x
    x = 193,291,901,564,515,712/500,095,993.22
  6. Step 6: Final answer
    x = 386,509,598.53

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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.