Home / 690,906.55-1,036,359.83-646,619.80

Finding the Fourth Proportional to 690,906.55, 1,036,359.83 and 646,619.80

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Solution

The fourth proportional to 690,906.55, 1,036,359.83 and 646,619.80 is: 969,929.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,906.55 : 1,036,359.83 = 646,619.80 : x
  2. Step 2: Convert to fraction form
    690,906.55/1,036,359.83 = 646,619.80/x
  3. Step 3: Cross multiply
    690,906.55x = 1,036,359.83 × 646,619.80
  4. Step 4: Simplify right side
    690,906.55x = 670,130,786,002.63
  5. Step 5: Solve for x
    x = 670,130,786,002.63/690,906.55
  6. Step 6: Final answer
    x = 969,929.70

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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.