Home / 772,623.54-1,066,220.42-428,511.96

Finding the Fourth Proportional to 772,623.54, 1,066,220.42 and 428,511.96

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Solution

The fourth proportional to 772,623.54, 1,066,220.42 and 428,511.96 is: 591,346.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,623.54 : 1,066,220.42 = 428,511.96 : x
  2. Step 2: Convert to fraction form
    772,623.54/1,066,220.42 = 428,511.96/x
  3. Step 3: Cross multiply
    772,623.54x = 1,066,220.42 × 428,511.96
  4. Step 4: Simplify right side
    772,623.54x = 456,888,199,823.66
  5. Step 5: Solve for x
    x = 456,888,199,823.66/772,623.54
  6. Step 6: Final answer
    x = 591,346.47

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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.