Home / 571,928.40-857,892.60-439,477.20

Finding the Fourth Proportional to 571,928.40, 857,892.60 and 439,477.20

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Solution

The fourth proportional to 571,928.40, 857,892.60 and 439,477.20 is: 659,215.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,928.40 : 857,892.60 = 439,477.20 : x
  2. Step 2: Convert to fraction form
    571,928.40/857,892.60 = 439,477.20/x
  3. Step 3: Cross multiply
    571,928.40x = 857,892.60 × 439,477.20
  4. Step 4: Simplify right side
    571,928.40x = 377,024,237,748.72
  5. Step 5: Solve for x
    x = 377,024,237,748.72/571,928.40
  6. Step 6: Final answer
    x = 659,215.80

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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.