Home / 689,916,910.40-1,035,379,250.40-485,843,566.40

Finding the Fourth Proportional to 689,916,910.40, 1,035,379,250.40 and 485,843,566.40

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Solution

The fourth proportional to 689,916,910.40, 1,035,379,250.40 and 485,843,566.40 is: 729,120,188.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,916,910.40 : 1,035,379,250.40 = 485,843,566.40 : x
  2. Step 2: Convert to fraction form
    689,916,910.40/1,035,379,250.40 = 485,843,566.40/x
  3. Step 3: Cross multiply
    689,916,910.40x = 1,035,379,250.40 × 485,843,566.40
  4. Step 4: Simplify right side
    689,916,910.40x = 503,032,347,590,894,592
  5. Step 5: Solve for x
    x = 503,032,347,590,894,592/689,916,910.40
  6. Step 6: Final answer
    x = 729,120,188.25

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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.