Home / 1,069,478.44-1,475,739.78-639,601.72

Finding the Fourth Proportional to 1,069,478.44, 1,475,739.78 and 639,601.72

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Solution

The fourth proportional to 1,069,478.44, 1,475,739.78 and 639,601.72 is: 882,566.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069,478.44 : 1,475,739.78 = 639,601.72 : x
  2. Step 2: Convert to fraction form
    1,069,478.44/1,475,739.78 = 639,601.72/x
  3. Step 3: Cross multiply
    1,069,478.44x = 1,475,739.78 × 639,601.72
  4. Step 4: Simplify right side
    1,069,478.44x = 943,885,701,560.42
  5. Step 5: Solve for x
    x = 943,885,701,560.42/1,069,478.44
  6. Step 6: Final answer
    x = 882,566.37

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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.