Home / 772,403.70-1,158,605.55-394,490.10

Finding the Fourth Proportional to 772,403.70, 1,158,605.55 and 394,490.10

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Solution

The fourth proportional to 772,403.70, 1,158,605.55 and 394,490.10 is: 591,735.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,403.70 : 1,158,605.55 = 394,490.10 : x
  2. Step 2: Convert to fraction form
    772,403.70/1,158,605.55 = 394,490.10/x
  3. Step 3: Cross multiply
    772,403.70x = 1,158,605.55 × 394,490.10
  4. Step 4: Simplify right side
    772,403.70x = 457,058,419,280.06
  5. Step 5: Solve for x
    x = 457,058,419,280.06/772,403.70
  6. Step 6: Final answer
    x = 591,735.15

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