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Finding the Fourth Proportional to 722,008.99, 996,334.44 and 395,259.40

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Solution

The fourth proportional to 722,008.99, 996,334.44 and 395,259.40 is: 545,437.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,008.99 : 996,334.44 = 395,259.40 : x
  2. Step 2: Convert to fraction form
    722,008.99/996,334.44 = 395,259.40/x
  3. Step 3: Cross multiply
    722,008.99x = 996,334.44 × 395,259.40
  4. Step 4: Simplify right side
    722,008.99x = 393,810,549,335.88
  5. Step 5: Solve for x
    x = 393,810,549,335.88/722,008.99
  6. Step 6: Final answer
    x = 545,437.18

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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.