Home / 778,880.28-1,074,887.46-439,348.44

Finding the Fourth Proportional to 778,880.28, 1,074,887.46 and 439,348.44

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Solution

The fourth proportional to 778,880.28, 1,074,887.46 and 439,348.44 is: 606,319.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,880.28 : 1,074,887.46 = 439,348.44 : x
  2. Step 2: Convert to fraction form
    778,880.28/1,074,887.46 = 439,348.44/x
  3. Step 3: Cross multiply
    778,880.28x = 1,074,887.46 × 439,348.44
  4. Step 4: Simplify right side
    778,880.28x = 472,250,128,726.56
  5. Step 5: Solve for x
    x = 472,250,128,726.56/778,880.28
  6. Step 6: Final answer
    x = 606,319.28

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Double scale
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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.