Home / 619,366.20-929,049.30-339,430.20

Finding the Fourth Proportional to 619,366.20, 929,049.30 and 339,430.20

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Solution

The fourth proportional to 619,366.20, 929,049.30 and 339,430.20 is: 509,145.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,366.20 : 929,049.30 = 339,430.20 : x
  2. Step 2: Convert to fraction form
    619,366.20/929,049.30 = 339,430.20/x
  3. Step 3: Cross multiply
    619,366.20x = 929,049.30 × 339,430.20
  4. Step 4: Simplify right side
    619,366.20x = 315,347,389,708.86
  5. Step 5: Solve for x
    x = 315,347,389,708.86/619,366.20
  6. Step 6: Final answer
    x = 509,145.30

Related Problems

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Half scale
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Double scale
Find fourth proportional to 619,367.20, 929,050.80 and 339,431.20
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.