Home / 985,277.80-1,477,916.70-512,885.80

Finding the Fourth Proportional to 985,277.80, 1,477,916.70 and 512,885.80

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Solution

The fourth proportional to 985,277.80, 1,477,916.70 and 512,885.80 is: 769,328.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,277.80 : 1,477,916.70 = 512,885.80 : x
  2. Step 2: Convert to fraction form
    985,277.80/1,477,916.70 = 512,885.80/x
  3. Step 3: Cross multiply
    985,277.80x = 1,477,916.70 × 512,885.80
  4. Step 4: Simplify right side
    985,277.80x = 758,002,489,012.86
  5. Step 5: Solve for x
    x = 758,002,489,012.86/985,277.80
  6. Step 6: Final answer
    x = 769,328.70

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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.