Home / 862,402.70-1,190,100.78-499,860.30

Finding the Fourth Proportional to 862,402.70, 1,190,100.78 and 499,860.30

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Solution

The fourth proportional to 862,402.70, 1,190,100.78 and 499,860.30 is: 689,798.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,402.70 : 1,190,100.78 = 499,860.30 : x
  2. Step 2: Convert to fraction form
    862,402.70/1,190,100.78 = 499,860.30/x
  3. Step 3: Cross multiply
    862,402.70x = 1,190,100.78 × 499,860.30
  4. Step 4: Simplify right side
    862,402.70x = 594,884,132,921.03
  5. Step 5: Solve for x
    x = 594,884,132,921.03/862,402.70
  6. Step 6: Final answer
    x = 689,798.55

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1.5x scale

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.