Home / 771,256.60-1,156,884.90-519,314.20

Finding the Fourth Proportional to 771,256.60, 1,156,884.90 and 519,314.20

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Solution

The fourth proportional to 771,256.60, 1,156,884.90 and 519,314.20 is: 778,971.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,256.60 : 1,156,884.90 = 519,314.20 : x
  2. Step 2: Convert to fraction form
    771,256.60/1,156,884.90 = 519,314.20/x
  3. Step 3: Cross multiply
    771,256.60x = 1,156,884.90 × 519,314.20
  4. Step 4: Simplify right side
    771,256.60x = 600,786,756,335.58
  5. Step 5: Solve for x
    x = 600,786,756,335.58/771,256.60
  6. Step 6: Final answer
    x = 778,971.30

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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.