Home / 830,418.75-1,145,977.89-448,445.54

Finding the Fourth Proportional to 830,418.75, 1,145,977.89 and 448,445.54

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Solution

The fourth proportional to 830,418.75, 1,145,977.89 and 448,445.54 is: 618,854.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,418.75 : 1,145,977.89 = 448,445.54 : x
  2. Step 2: Convert to fraction form
    830,418.75/1,145,977.89 = 448,445.54/x
  3. Step 3: Cross multiply
    830,418.75x = 1,145,977.89 × 448,445.54
  4. Step 4: Simplify right side
    830,418.75x = 513,908,673,709.11
  5. Step 5: Solve for x
    x = 513,908,673,709.11/830,418.75
  6. Step 6: Final answer
    x = 618,854.85

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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.