Home / 818,555.55-1,129,640.70-455,979.32

Finding the Fourth Proportional to 818,555.55, 1,129,640.70 and 455,979.32

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Solution

The fourth proportional to 818,555.55, 1,129,640.70 and 455,979.32 is: 629,270.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,555.55 : 1,129,640.70 = 455,979.32 : x
  2. Step 2: Convert to fraction form
    818,555.55/1,129,640.70 = 455,979.32/x
  3. Step 3: Cross multiply
    818,555.55x = 1,129,640.70 × 455,979.32
  4. Step 4: Simplify right side
    818,555.55x = 515,092,792,582.12
  5. Step 5: Solve for x
    x = 515,092,792,582.12/818,555.55
  6. Step 6: Final answer
    x = 629,270.42

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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.