Home / 920,091.40-1,377,512.70-815,115.40

Finding the Fourth Proportional to 920,091.40, 1,377,512.70 and 815,115.40

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Solution

The fourth proportional to 920,091.40, 1,377,512.70 and 815,115.40 is: 1,220,348.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,091.40 : 1,377,512.70 = 815,115.40 : x
  2. Step 2: Convert to fraction form
    920,091.40/1,377,512.70 = 815,115.40/x
  3. Step 3: Cross multiply
    920,091.40x = 1,377,512.70 × 815,115.40
  4. Step 4: Simplify right side
    920,091.40x = 1,122,831,815,465.58
  5. Step 5: Solve for x
    x = 1,122,831,815,465.58/920,091.40
  6. Step 6: Final answer
    x = 1,220,348.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.