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Finding the Fourth Proportional to 496,999.60, 745,499.40 and 319,706.80

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Solution

The fourth proportional to 496,999.60, 745,499.40 and 319,706.80 is: 479,560.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,999.60 : 745,499.40 = 319,706.80 : x
  2. Step 2: Convert to fraction form
    496,999.60/745,499.40 = 319,706.80/x
  3. Step 3: Cross multiply
    496,999.60x = 745,499.40 × 319,706.80
  4. Step 4: Simplify right side
    496,999.60x = 238,341,227,575.92
  5. Step 5: Solve for x
    x = 238,341,227,575.92/496,999.60
  6. Step 6: Final answer
    x = 479,560.20

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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.