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Finding the Fourth Proportional to 655,345.80, 983,018.70 and 255,999.60

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Solution

The fourth proportional to 655,345.80, 983,018.70 and 255,999.60 is: 383,999.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,345.80 : 983,018.70 = 255,999.60 : x
  2. Step 2: Convert to fraction form
    655,345.80/983,018.70 = 255,999.60/x
  3. Step 3: Cross multiply
    655,345.80x = 983,018.70 × 255,999.60
  4. Step 4: Simplify right side
    655,345.80x = 251,652,393,992.52
  5. Step 5: Solve for x
    x = 251,652,393,992.52/655,345.80
  6. Step 6: Final answer
    x = 383,999.40

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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.