Home / 651,786.30-977,679.45-439,209.90

Finding the Fourth Proportional to 651,786.30, 977,679.45 and 439,209.90

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Solution

The fourth proportional to 651,786.30, 977,679.45 and 439,209.90 is: 658,814.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,786.30 : 977,679.45 = 439,209.90 : x
  2. Step 2: Convert to fraction form
    651,786.30/977,679.45 = 439,209.90/x
  3. Step 3: Cross multiply
    651,786.30x = 977,679.45 × 439,209.90
  4. Step 4: Simplify right side
    651,786.30x = 429,406,493,466.56
  5. Step 5: Solve for x
    x = 429,406,493,466.56/651,786.30
  6. Step 6: Final answer
    x = 658,814.85

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Half scale
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Double scale
Find fourth proportional to 651,787.30, 977,680.95 and 439,210.90
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.