Home / 646,608,387.89-970,525,776.54-400,219,721.30

Finding the Fourth Proportional to 646,608,387.89, 970,525,776.54 and 400,219,721.30

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Solution

The fourth proportional to 646,608,387.89, 970,525,776.54 and 400,219,721.30 is: 600,709,120.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,608,387.89 : 970,525,776.54 = 400,219,721.30 : x
  2. Step 2: Convert to fraction form
    646,608,387.89/970,525,776.54 = 400,219,721.30/x
  3. Step 3: Cross multiply
    646,608,387.89x = 970,525,776.54 × 400,219,721.30
  4. Step 4: Simplify right side
    646,608,387.89x = 388,423,555,794,451,136
  5. Step 5: Solve for x
    x = 388,423,555,794,451,136/646,608,387.89
  6. Step 6: Final answer
    x = 600,709,120.19

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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.