Home / 812,865.41-1,121,739.56-450,288.14

Finding the Fourth Proportional to 812,865.41, 1,121,739.56 and 450,288.14

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Solution

The fourth proportional to 812,865.41, 1,121,739.56 and 450,288.14 is: 621,389.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,865.41 : 1,121,739.56 = 450,288.14 : x
  2. Step 2: Convert to fraction form
    812,865.41/1,121,739.56 = 450,288.14/x
  3. Step 3: Cross multiply
    812,865.41x = 1,121,739.56 × 450,288.14
  4. Step 4: Simplify right side
    812,865.41x = 505,106,020,036.82
  5. Step 5: Solve for x
    x = 505,106,020,036.82/812,865.41
  6. Step 6: Final answer
    x = 621,389.49

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1.5x scale

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.