Home / 772,586.20-1,158,879.30-520,643.80

Finding the Fourth Proportional to 772,586.20, 1,158,879.30 and 520,643.80

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Solution

The fourth proportional to 772,586.20, 1,158,879.30 and 520,643.80 is: 780,965.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,586.20 : 1,158,879.30 = 520,643.80 : x
  2. Step 2: Convert to fraction form
    772,586.20/1,158,879.30 = 520,643.80/x
  3. Step 3: Cross multiply
    772,586.20x = 1,158,879.30 × 520,643.80
  4. Step 4: Simplify right side
    772,586.20x = 603,363,322,493.34
  5. Step 5: Solve for x
    x = 603,363,322,493.34/772,586.20
  6. Step 6: Final answer
    x = 780,965.70

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Double scale
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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.