Home / 813,589.96-1,122,878.42-519,366.78

Finding the Fourth Proportional to 813,589.96, 1,122,878.42 and 519,366.78

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Solution

The fourth proportional to 813,589.96, 1,122,878.42 and 519,366.78 is: 716,805.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,589.96 : 1,122,878.42 = 519,366.78 : x
  2. Step 2: Convert to fraction form
    813,589.96/1,122,878.42 = 519,366.78/x
  3. Step 3: Cross multiply
    813,589.96x = 1,122,878.42 × 519,366.78
  4. Step 4: Simplify right side
    813,589.96x = 583,185,749,326.89
  5. Step 5: Solve for x
    x = 583,185,749,326.89/813,589.96
  6. Step 6: Final answer
    x = 716,805.49

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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.