Home / 651,628.20-977,442.30-427,096.20

Finding the Fourth Proportional to 651,628.20, 977,442.30 and 427,096.20

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Solution

The fourth proportional to 651,628.20, 977,442.30 and 427,096.20 is: 640,644.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,628.20 : 977,442.30 = 427,096.20 : x
  2. Step 2: Convert to fraction form
    651,628.20/977,442.30 = 427,096.20/x
  3. Step 3: Cross multiply
    651,628.20x = 977,442.30 × 427,096.20
  4. Step 4: Simplify right side
    651,628.20x = 417,461,892,049.26
  5. Step 5: Solve for x
    x = 417,461,892,049.26/651,628.20
  6. Step 6: Final answer
    x = 640,644.30

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Half scale
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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.