Home / 509,841,285.85-703,540,729.78-286,778,558.62

Finding the Fourth Proportional to 509,841,285.85, 703,540,729.78 and 286,778,558.62

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Solution

The fourth proportional to 509,841,285.85, 703,540,729.78 and 286,778,558.62 is: 395,731,773.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,841,285.85 : 703,540,729.78 = 286,778,558.62 : x
  2. Step 2: Convert to fraction form
    509,841,285.85/703,540,729.78 = 286,778,558.62/x
  3. Step 3: Cross multiply
    509,841,285.85x = 703,540,729.78 × 286,778,558.62
  4. Step 4: Simplify right side
    509,841,285.85x = 201,760,396,416,771,296
  5. Step 5: Solve for x
    x = 201,760,396,416,771,296/509,841,285.85
  6. Step 6: Final answer
    x = 395,731,773.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.