Home / 857,980.20-1,184,044.32-518,382.84

Finding the Fourth Proportional to 857,980.20, 1,184,044.32 and 518,382.84

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Solution

The fourth proportional to 857,980.20, 1,184,044.32 and 518,382.84 is: 715,387.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    857,980.20 : 1,184,044.32 = 518,382.84 : x
  2. Step 2: Convert to fraction form
    857,980.20/1,184,044.32 = 518,382.84/x
  3. Step 3: Cross multiply
    857,980.20x = 1,184,044.32 × 518,382.84
  4. Step 4: Simplify right side
    857,980.20x = 613,788,257,287.47
  5. Step 5: Solve for x
    x = 613,788,257,287.47/857,980.20
  6. Step 6: Final answer
    x = 715,387.44

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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.