Home / 812,868.52-1,121,746.44-450,291.28

Finding the Fourth Proportional to 812,868.52, 1,121,746.44 and 450,291.28

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Solution

The fourth proportional to 812,868.52, 1,121,746.44 and 450,291.28 is: 621,395.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,868.52 : 1,121,746.44 = 450,291.28 : x
  2. Step 2: Convert to fraction form
    812,868.52/1,121,746.44 = 450,291.28/x
  3. Step 3: Cross multiply
    812,868.52x = 1,121,746.44 × 450,291.28
  4. Step 4: Simplify right side
    812,868.52x = 505,112,640,303.04
  5. Step 5: Solve for x
    x = 505,112,640,303.04/812,868.52
  6. Step 6: Final answer
    x = 621,395.25

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Double scale
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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.