Home / 769,933.40-1,062,139.02-498,086.60

Finding the Fourth Proportional to 769,933.40, 1,062,139.02 and 498,086.60

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Solution

The fourth proportional to 769,933.40, 1,062,139.02 and 498,086.60 is: 687,120.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,933.40 : 1,062,139.02 = 498,086.60 : x
  2. Step 2: Convert to fraction form
    769,933.40/1,062,139.02 = 498,086.60/x
  3. Step 3: Cross multiply
    769,933.40x = 1,062,139.02 × 498,086.60
  4. Step 4: Simplify right side
    769,933.40x = 529,037,213,199.13
  5. Step 5: Solve for x
    x = 529,037,213,199.13/769,933.40
  6. Step 6: Final answer
    x = 687,120.75

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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.