Home / 899,260.56-1,240,964.55-491,353.47

Finding the Fourth Proportional to 899,260.56, 1,240,964.55 and 491,353.47

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Solution

The fourth proportional to 899,260.56, 1,240,964.55 and 491,353.47 is: 678,059.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,260.56 : 1,240,964.55 = 491,353.47 : x
  2. Step 2: Convert to fraction form
    899,260.56/1,240,964.55 = 491,353.47/x
  3. Step 3: Cross multiply
    899,260.56x = 1,240,964.55 × 491,353.47
  4. Step 4: Simplify right side
    899,260.56x = 609,752,237,789.49
  5. Step 5: Solve for x
    x = 609,752,237,789.49/899,260.56
  6. Step 6: Final answer
    x = 678,059.58

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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.