Home / 772,533.92-1,066,077.68-428,371.20

Finding the Fourth Proportional to 772,533.92, 1,066,077.68 and 428,371.20

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Solution

The fourth proportional to 772,533.92, 1,066,077.68 and 428,371.20 is: 591,141.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,533.92 : 1,066,077.68 = 428,371.20 : x
  2. Step 2: Convert to fraction form
    772,533.92/1,066,077.68 = 428,371.20/x
  3. Step 3: Cross multiply
    772,533.92x = 1,066,077.68 × 428,371.20
  4. Step 4: Simplify right side
    772,533.92x = 456,676,975,074.82
  5. Step 5: Solve for x
    x = 456,676,975,074.82/772,533.92
  6. Step 6: Final answer
    x = 591,141.65

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.