Home / 646,121.20-891,647.36-359,635.20

Finding the Fourth Proportional to 646,121.20, 891,647.36 and 359,635.20

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Solution

The fourth proportional to 646,121.20, 891,647.36 and 359,635.20 is: 496,296.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,121.20 : 891,647.36 = 359,635.20 : x
  2. Step 2: Convert to fraction form
    646,121.20/891,647.36 = 359,635.20/x
  3. Step 3: Cross multiply
    646,121.20x = 891,647.36 × 359,635.20
  4. Step 4: Simplify right side
    646,121.20x = 320,667,776,643.07
  5. Step 5: Solve for x
    x = 320,667,776,643.07/646,121.20
  6. Step 6: Final answer
    x = 496,296.63

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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.