Home / 690,489.90-1,034,451.81-375,211.98

Finding the Fourth Proportional to 690,489.90, 1,034,451.81 and 375,211.98

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Solution

The fourth proportional to 690,489.90, 1,034,451.81 and 375,211.98 is: 562,120.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,489.90 : 1,034,451.81 = 375,211.98 : x
  2. Step 2: Convert to fraction form
    690,489.90/1,034,451.81 = 375,211.98/x
  3. Step 3: Cross multiply
    690,489.90x = 1,034,451.81 × 375,211.98
  4. Step 4: Simplify right side
    690,489.90x = 388,138,711,844.68
  5. Step 5: Solve for x
    x = 388,138,711,844.68/690,489.90
  6. Step 6: Final answer
    x = 562,120.77

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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.