Home / 771,256.20-1,156,884.30-519,313.80

Finding the Fourth Proportional to 771,256.20, 1,156,884.30 and 519,313.80

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Solution

The fourth proportional to 771,256.20, 1,156,884.30 and 519,313.80 is: 778,970.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,256.20 : 1,156,884.30 = 519,313.80 : x
  2. Step 2: Convert to fraction form
    771,256.20/1,156,884.30 = 519,313.80/x
  3. Step 3: Cross multiply
    771,256.20x = 1,156,884.30 × 519,313.80
  4. Step 4: Simplify right side
    771,256.20x = 600,785,981,993.34
  5. Step 5: Solve for x
    x = 600,785,981,993.34/771,256.20
  6. Step 6: Final answer
    x = 778,970.70

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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.