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Finding the Fourth Proportional to 571,009.60, 856,514.40 and 383,003.20

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Solution

The fourth proportional to 571,009.60, 856,514.40 and 383,003.20 is: 574,504.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,009.60 : 856,514.40 = 383,003.20 : x
  2. Step 2: Convert to fraction form
    571,009.60/856,514.40 = 383,003.20/x
  3. Step 3: Cross multiply
    571,009.60x = 856,514.40 × 383,003.20
  4. Step 4: Simplify right side
    571,009.60x = 328,047,756,046.08
  5. Step 5: Solve for x
    x = 328,047,756,046.08/571,009.60
  6. Step 6: Final answer
    x = 574,504.80

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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.