Home / 812,843.47-1,219,643.48-363,868.09

Finding the Fourth Proportional to 812,843.47, 1,219,643.48 and 363,868.09

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Solution

The fourth proportional to 812,843.47, 1,219,643.48 and 363,868.09 is: 545,971.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,843.47 : 1,219,643.48 = 363,868.09 : x
  2. Step 2: Convert to fraction form
    812,843.47/1,219,643.48 = 363,868.09/x
  3. Step 3: Cross multiply
    812,843.47x = 1,219,643.48 × 363,868.09
  4. Step 4: Simplify right side
    812,843.47x = 443,789,343,548.55
  5. Step 5: Solve for x
    x = 443,789,343,548.55/812,843.47
  6. Step 6: Final answer
    x = 545,971.47

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1.5x scale

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.