Home / 1,305,280,720.80-1,957,921,081.20-443,637,712.80

Finding the Fourth Proportional to 1,305,280,720.80, 1,957,921,081.20 and 443,637,712.80

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Solution

The fourth proportional to 1,305,280,720.80, 1,957,921,081.20 and 443,637,712.80 is: 665,456,569.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,305,280,720.80 : 1,957,921,081.20 = 443,637,712.80 : x
  2. Step 2: Convert to fraction form
    1,305,280,720.80/1,957,921,081.20 = 443,637,712.80/x
  3. Step 3: Cross multiply
    1,305,280,720.80x = 1,957,921,081.20 × 443,637,712.80
  4. Step 4: Simplify right side
    1,305,280,720.80x = 868,607,630,306,471,168
  5. Step 5: Solve for x
    x = 868,607,630,306,471,168/1,305,280,720.80
  6. Step 6: Final answer
    x = 665,456,569.20

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Double scale
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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.