Home / 641,784.26-885,628.55-351,340.18

Finding the Fourth Proportional to 641,784.26, 885,628.55 and 351,340.18

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Solution

The fourth proportional to 641,784.26, 885,628.55 and 351,340.18 is: 484,830.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,784.26 : 885,628.55 = 351,340.18 : x
  2. Step 2: Convert to fraction form
    641,784.26/885,628.55 = 351,340.18/x
  3. Step 3: Cross multiply
    641,784.26x = 885,628.55 × 351,340.18
  4. Step 4: Simplify right side
    641,784.26x = 311,156,892,834.42
  5. Step 5: Solve for x
    x = 311,156,892,834.42/641,784.26
  6. Step 6: Final answer
    x = 484,830.98

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Half scale
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Double scale
Find fourth proportional to 641,785.26, 885,629.93 and 351,341.18
Similar ratio
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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.