Home / 772,182.20-1,065,487.43-485,499.31

Finding the Fourth Proportional to 772,182.20, 1,065,487.43 and 485,499.31

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Solution

The fourth proportional to 772,182.20, 1,065,487.43 and 485,499.31 is: 669,911.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,182.20 : 1,065,487.43 = 485,499.31 : x
  2. Step 2: Convert to fraction form
    772,182.20/1,065,487.43 = 485,499.31/x
  3. Step 3: Cross multiply
    772,182.20x = 1,065,487.43 × 485,499.31
  4. Step 4: Simplify right side
    772,182.20x = 517,293,410,154.47
  5. Step 5: Solve for x
    x = 517,293,410,154.47/772,182.20
  6. Step 6: Final answer
    x = 669,911.08

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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.