Home / 991,614.56-1,368,438.72-538,905.60

Finding the Fourth Proportional to 991,614.56, 1,368,438.72 and 538,905.60

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Solution

The fourth proportional to 991,614.56, 1,368,438.72 and 538,905.60 is: 743,695.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,614.56 : 1,368,438.72 = 538,905.60 : x
  2. Step 2: Convert to fraction form
    991,614.56/1,368,438.72 = 538,905.60/x
  3. Step 3: Cross multiply
    991,614.56x = 1,368,438.72 × 538,905.60
  4. Step 4: Simplify right side
    991,614.56x = 737,459,289,464.83
  5. Step 5: Solve for x
    x = 737,459,289,464.83/991,614.56
  6. Step 6: Final answer
    x = 743,695.50

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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.