Home / 699,128.70-1,049,470.65-384,200.70

Finding the Fourth Proportional to 699,128.70, 1,049,470.65 and 384,200.70

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Solution

The fourth proportional to 699,128.70, 1,049,470.65 and 384,200.70 is: 576,728.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,128.70 : 1,049,470.65 = 384,200.70 : x
  2. Step 2: Convert to fraction form
    699,128.70/1,049,470.65 = 384,200.70/x
  3. Step 3: Cross multiply
    699,128.70x = 1,049,470.65 × 384,200.70
  4. Step 4: Simplify right side
    699,128.70x = 403,207,358,359.46
  5. Step 5: Solve for x
    x = 403,207,358,359.46/699,128.70
  6. Step 6: Final answer
    x = 576,728.37

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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.