Home / 651,676.20-977,514.30-439,099.80

Finding the Fourth Proportional to 651,676.20, 977,514.30 and 439,099.80

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Solution

The fourth proportional to 651,676.20, 977,514.30 and 439,099.80 is: 658,649.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,676.20 : 977,514.30 = 439,099.80 : x
  2. Step 2: Convert to fraction form
    651,676.20/977,514.30 = 439,099.80/x
  3. Step 3: Cross multiply
    651,676.20x = 977,514.30 × 439,099.80
  4. Step 4: Simplify right side
    651,676.20x = 429,226,333,627.14
  5. Step 5: Solve for x
    x = 429,226,333,627.14/651,676.20
  6. Step 6: Final answer
    x = 658,649.70

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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.