Home / 985,278.80-1,477,918.20-512,886.80

Finding the Fourth Proportional to 985,278.80, 1,477,918.20 and 512,886.80

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Solution

The fourth proportional to 985,278.80, 1,477,918.20 and 512,886.80 is: 769,330.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,278.80 : 1,477,918.20 = 512,886.80 : x
  2. Step 2: Convert to fraction form
    985,278.80/1,477,918.20 = 512,886.80/x
  3. Step 3: Cross multiply
    985,278.80x = 1,477,918.20 × 512,886.80
  4. Step 4: Simplify right side
    985,278.80x = 758,004,736,259.76
  5. Step 5: Solve for x
    x = 758,004,736,259.76/985,278.80
  6. Step 6: Final answer
    x = 769,330.20

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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.