Home / 722,090.16-996,415.29-399,788.46

Finding the Fourth Proportional to 722,090.16, 996,415.29 and 399,788.46

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Solution

The fourth proportional to 722,090.16, 996,415.29 and 399,788.46 is: 551,669.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,090.16 : 996,415.29 = 399,788.46 : x
  2. Step 2: Convert to fraction form
    722,090.16/996,415.29 = 399,788.46/x
  3. Step 3: Cross multiply
    722,090.16x = 996,415.29 × 399,788.46
  4. Step 4: Simplify right side
    722,090.16x = 398,355,334,309.55
  5. Step 5: Solve for x
    x = 398,355,334,309.55/722,090.16
  6. Step 6: Final answer
    x = 551,669.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.