Home / 772,129.20-1,158,193.80-520,186.80

Finding the Fourth Proportional to 772,129.20, 1,158,193.80 and 520,186.80

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Solution

The fourth proportional to 772,129.20, 1,158,193.80 and 520,186.80 is: 780,280.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,129.20 : 1,158,193.80 = 520,186.80 : x
  2. Step 2: Convert to fraction form
    772,129.20/1,158,193.80 = 520,186.80/x
  3. Step 3: Cross multiply
    772,129.20x = 1,158,193.80 × 520,186.80
  4. Step 4: Simplify right side
    772,129.20x = 602,477,126,601.84
  5. Step 5: Solve for x
    x = 602,477,126,601.84/772,129.20
  6. Step 6: Final answer
    x = 780,280.20

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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.