Home / 690,899.80-1,036,349.70-269,880.46

Finding the Fourth Proportional to 690,899.80, 1,036,349.70 and 269,880.46

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Solution

The fourth proportional to 690,899.80, 1,036,349.70 and 269,880.46 is: 404,820.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,899.80 : 1,036,349.70 = 269,880.46 : x
  2. Step 2: Convert to fraction form
    690,899.80/1,036,349.70 = 269,880.46/x
  3. Step 3: Cross multiply
    690,899.80x = 1,036,349.70 × 269,880.46
  4. Step 4: Simplify right side
    690,899.80x = 279,690,533,756.86
  5. Step 5: Solve for x
    x = 279,690,533,756.86/690,899.80
  6. Step 6: Final answer
    x = 404,820.69

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Double scale
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Similar ratio
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1.5x scale

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.