Home / 1,200,030.72-1,656,099.84-663,521.28

Finding the Fourth Proportional to 1,200,030.72, 1,656,099.84 and 663,521.28

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Solution

The fourth proportional to 1,200,030.72, 1,656,099.84 and 663,521.28 is: 915,691.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,030.72 : 1,656,099.84 = 663,521.28 : x
  2. Step 2: Convert to fraction form
    1,200,030.72/1,656,099.84 = 663,521.28/x
  3. Step 3: Cross multiply
    1,200,030.72x = 1,656,099.84 × 663,521.28
  4. Step 4: Simplify right side
    1,200,030.72x = 1,098,857,485,644.60
  5. Step 5: Solve for x
    x = 1,098,857,485,644.60/1,200,030.72
  6. Step 6: Final answer
    x = 915,691.13

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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.