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Finding the Fourth Proportional to 722,009.34, 996,373.13 and 395,343.05

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Solution

The fourth proportional to 722,009.34, 996,373.13 and 395,343.05 is: 545,573.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,009.34 : 996,373.13 = 395,343.05 : x
  2. Step 2: Convert to fraction form
    722,009.34/996,373.13 = 395,343.05/x
  3. Step 3: Cross multiply
    722,009.34x = 996,373.13 × 395,343.05
  4. Step 4: Simplify right side
    722,009.34x = 393,909,194,712.47
  5. Step 5: Solve for x
    x = 393,909,194,712.47/722,009.34
  6. Step 6: Final answer
    x = 545,573.54

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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.