Home / 819,566.10-1,130,512.55-637,990.43

Finding the Fourth Proportional to 819,566.10, 1,130,512.55 and 637,990.43

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Solution

The fourth proportional to 819,566.10, 1,130,512.55 and 637,990.43 is: 880,046.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,566.10 : 1,130,512.55 = 637,990.43 : x
  2. Step 2: Convert to fraction form
    819,566.10/1,130,512.55 = 637,990.43/x
  3. Step 3: Cross multiply
    819,566.10x = 1,130,512.55 × 637,990.43
  4. Step 4: Simplify right side
    819,566.10x = 721,256,179,052.38
  5. Step 5: Solve for x
    x = 721,256,179,052.38/819,566.10
  6. Step 6: Final answer
    x = 880,046.38

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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.