Home / 664,852,837.20-997,279,255.80-389,353,822.80

Finding the Fourth Proportional to 664,852,837.20, 997,279,255.80 and 389,353,822.80

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Solution

The fourth proportional to 664,852,837.20, 997,279,255.80 and 389,353,822.80 is: 584,030,734.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,852,837.20 : 997,279,255.80 = 389,353,822.80 : x
  2. Step 2: Convert to fraction form
    664,852,837.20/997,279,255.80 = 389,353,822.80/x
  3. Step 3: Cross multiply
    664,852,837.20x = 997,279,255.80 × 389,353,822.80
  4. Step 4: Simplify right side
    664,852,837.20x = 388,294,490,644,869,056
  5. Step 5: Solve for x
    x = 388,294,490,644,869,056/664,852,837.20
  6. Step 6: Final answer
    x = 584,030,734.20

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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.