Home / 830,766.20-1,246,149.30-511,901.60

Finding the Fourth Proportional to 830,766.20, 1,246,149.30 and 511,901.60

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Solution

The fourth proportional to 830,766.20, 1,246,149.30 and 511,901.60 is: 767,852.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,766.20 : 1,246,149.30 = 511,901.60 : x
  2. Step 2: Convert to fraction form
    830,766.20/1,246,149.30 = 511,901.60/x
  3. Step 3: Cross multiply
    830,766.20x = 1,246,149.30 × 511,901.60
  4. Step 4: Simplify right side
    830,766.20x = 637,905,820,508.88
  5. Step 5: Solve for x
    x = 637,905,820,508.88/830,766.20
  6. Step 6: Final answer
    x = 767,852.40

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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.