Home / 1,280,120,727.20-1,920,181,090.80-885,578,928.80

Finding the Fourth Proportional to 1,280,120,727.20, 1,920,181,090.80 and 885,578,928.80

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Solution

The fourth proportional to 1,280,120,727.20, 1,920,181,090.80 and 885,578,928.80 is: 1,328,368,393.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,120,727.20 : 1,920,181,090.80 = 885,578,928.80 : x
  2. Step 2: Convert to fraction form
    1,280,120,727.20/1,920,181,090.80 = 885,578,928.80/x
  3. Step 3: Cross multiply
    1,280,120,727.20x = 1,920,181,090.80 × 885,578,928.80
  4. Step 4: Simplify right side
    1,280,120,727.20x = 1,700,471,913,492,679,424
  5. Step 5: Solve for x
    x = 1,700,471,913,492,679,424/1,280,120,727.20
  6. Step 6: Final answer
    x = 1,328,368,393.20

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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.