Home / 1,021,690.72-1,532,536.38-421,992.76

Finding the Fourth Proportional to 1,021,690.72, 1,532,536.38 and 421,992.76

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Solution

The fourth proportional to 1,021,690.72, 1,532,536.38 and 421,992.76 is: 632,989.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021,690.72 : 1,532,536.38 = 421,992.76 : x
  2. Step 2: Convert to fraction form
    1,021,690.72/1,532,536.38 = 421,992.76/x
  3. Step 3: Cross multiply
    1,021,690.72x = 1,532,536.38 × 421,992.76
  4. Step 4: Simplify right side
    1,021,690.72x = 646,719,256,796.61
  5. Step 5: Solve for x
    x = 646,719,256,796.61/1,021,690.72
  6. Step 6: Final answer
    x = 632,989.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.