Home / 571,232.80-856,849.20-438,522.40

Finding the Fourth Proportional to 571,232.80, 856,849.20 and 438,522.40

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Solution

The fourth proportional to 571,232.80, 856,849.20 and 438,522.40 is: 657,783.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,232.80 : 856,849.20 = 438,522.40 : x
  2. Step 2: Convert to fraction form
    571,232.80/856,849.20 = 438,522.40/x
  3. Step 3: Cross multiply
    571,232.80x = 856,849.20 × 438,522.40
  4. Step 4: Simplify right side
    571,232.80x = 375,747,567,622.08
  5. Step 5: Solve for x
    x = 375,747,567,622.08/571,232.80
  6. Step 6: Final answer
    x = 657,783.60

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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.