Home / 899,134.20-1,240,891.02-491,298.04

Finding the Fourth Proportional to 899,134.20, 1,240,891.02 and 491,298.04

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Solution

The fourth proportional to 899,134.20, 1,240,891.02 and 491,298.04 is: 678,038.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,134.20 : 1,240,891.02 = 491,298.04 : x
  2. Step 2: Convert to fraction form
    899,134.20/1,240,891.02 = 491,298.04/x
  3. Step 3: Cross multiply
    899,134.20x = 1,240,891.02 × 491,298.04
  4. Step 4: Simplify right side
    899,134.20x = 609,647,325,979.60
  5. Step 5: Solve for x
    x = 609,647,325,979.60/899,134.20
  6. Step 6: Final answer
    x = 678,038.19

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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.