Home / 689,916,963.40-1,035,379,329.90-485,843,619.40

Finding the Fourth Proportional to 689,916,963.40, 1,035,379,329.90 and 485,843,619.40

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Solution

The fourth proportional to 689,916,963.40, 1,035,379,329.90 and 485,843,619.40 is: 729,120,267.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,916,963.40 : 1,035,379,329.90 = 485,843,619.40 : x
  2. Step 2: Convert to fraction form
    689,916,963.40/1,035,379,329.90 = 485,843,619.40/x
  3. Step 3: Cross multiply
    689,916,963.40x = 1,035,379,329.90 × 485,843,619.40
  4. Step 4: Simplify right side
    689,916,963.40x = 503,032,441,090,562,624
  5. Step 5: Solve for x
    x = 503,032,441,090,562,624/689,916,963.40
  6. Step 6: Final answer
    x = 729,120,267.77

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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.