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Finding the Fourth Proportional to 722,090.63, 996,500.61 and 395,417.43

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Solution

The fourth proportional to 722,090.63, 996,500.61 and 395,417.43 is: 545,684.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,090.63 : 996,500.61 = 395,417.43 : x
  2. Step 2: Convert to fraction form
    722,090.63/996,500.61 = 395,417.43/x
  3. Step 3: Cross multiply
    722,090.63x = 996,500.61 × 395,417.43
  4. Step 4: Simplify right side
    722,090.63x = 394,033,710,199.63
  5. Step 5: Solve for x
    x = 394,033,710,199.63/722,090.63
  6. Step 6: Final answer
    x = 545,684.56

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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.