Home / 813,820.57-1,123,085.86-451,259.71

Finding the Fourth Proportional to 813,820.57, 1,123,085.86 and 451,259.71

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Solution

The fourth proportional to 813,820.57, 1,123,085.86 and 451,259.71 is: 622,745.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,820.57 : 1,123,085.86 = 451,259.71 : x
  2. Step 2: Convert to fraction form
    813,820.57/1,123,085.86 = 451,259.71/x
  3. Step 3: Cross multiply
    813,820.57x = 1,123,085.86 × 451,259.71
  4. Step 4: Simplify right side
    813,820.57x = 506,803,395,552.84
  5. Step 5: Solve for x
    x = 506,803,395,552.84/813,820.57
  6. Step 6: Final answer
    x = 622,745.87

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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.