Home / 872,979,467.42-1,309,456,869.59-406,379,916

Finding the Fourth Proportional to 872,979,467.42, 1,309,456,869.59 and 406,379,916

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Solution

The fourth proportional to 872,979,467.42, 1,309,456,869.59 and 406,379,916 is: 609,564,133.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,979,467.42 : 1,309,456,869.59 = 406,379,916 : x
  2. Step 2: Convert to fraction form
    872,979,467.42/1,309,456,869.59 = 406,379,916/x
  3. Step 3: Cross multiply
    872,979,467.42x = 1,309,456,869.59 × 406,379,916
  4. Step 4: Simplify right side
    872,979,467.42x = 532,136,972,670,623,104
  5. Step 5: Solve for x
    x = 532,136,972,670,623,104/872,979,467.42
  6. Step 6: Final answer
    x = 609,564,133.55

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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.