Home / 648,090,370.03-972,095,198.72-399,142,999.12

Finding the Fourth Proportional to 648,090,370.03, 972,095,198.72 and 399,142,999.12

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Solution

The fourth proportional to 648,090,370.03, 972,095,198.72 and 399,142,999.12 is: 598,689,644.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,090,370.03 : 972,095,198.72 = 399,142,999.12 : x
  2. Step 2: Convert to fraction form
    648,090,370.03/972,095,198.72 = 399,142,999.12/x
  3. Step 3: Cross multiply
    648,090,370.03x = 972,095,198.72 × 399,142,999.12
  4. Step 4: Simplify right side
    648,090,370.03x = 388,004,993,048,513,728
  5. Step 5: Solve for x
    x = 388,004,993,048,513,728/648,090,370.03
  6. Step 6: Final answer
    x = 598,689,644.21

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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.