Home / 856,514.80-1,284,772.20-357,878.80

Finding the Fourth Proportional to 856,514.80, 1,284,772.20 and 357,878.80

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Solution

The fourth proportional to 856,514.80, 1,284,772.20 and 357,878.80 is: 536,818.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,514.80 : 1,284,772.20 = 357,878.80 : x
  2. Step 2: Convert to fraction form
    856,514.80/1,284,772.20 = 357,878.80/x
  3. Step 3: Cross multiply
    856,514.80x = 1,284,772.20 × 357,878.80
  4. Step 4: Simplify right side
    856,514.80x = 459,792,733,209.36
  5. Step 5: Solve for x
    x = 459,792,733,209.36/856,514.80
  6. Step 6: Final answer
    x = 536,818.20

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Half scale
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Double scale
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Similar ratio
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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.