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Finding the Fourth Proportional to 571,010.60, 856,515.90 and 383,004.20

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Solution

The fourth proportional to 571,010.60, 856,515.90 and 383,004.20 is: 574,506.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,010.60 : 856,515.90 = 383,004.20 : x
  2. Step 2: Convert to fraction form
    571,010.60/856,515.90 = 383,004.20/x
  3. Step 3: Cross multiply
    571,010.60x = 856,515.90 × 383,004.20
  4. Step 4: Simplify right side
    571,010.60x = 328,049,187,066.78
  5. Step 5: Solve for x
    x = 328,049,187,066.78/571,010.60
  6. Step 6: Final answer
    x = 574,506.30

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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.