Home / 1,069,021.18-1,475,200.92-639,538.12

Finding the Fourth Proportional to 1,069,021.18, 1,475,200.92 and 639,538.12

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Solution

The fourth proportional to 1,069,021.18, 1,475,200.92 and 639,538.12 is: 882,533.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,069,021.18 : 1,475,200.92 = 639,538.12 : x
  2. Step 2: Convert to fraction form
    1,069,021.18/1,475,200.92 = 639,538.12/x
  3. Step 3: Cross multiply
    1,069,021.18x = 1,475,200.92 × 639,538.12
  4. Step 4: Simplify right side
    1,069,021.18x = 943,447,222,999.07
  5. Step 5: Solve for x
    x = 943,447,222,999.07/1,069,021.18
  6. Step 6: Final answer
    x = 882,533.71

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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.