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Finding the Fourth Proportional to 689,297.96, 951,090.35 and 402,762.68

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Solution

The fourth proportional to 689,297.96, 951,090.35 and 402,762.68 is: 555,730.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,297.96 : 951,090.35 = 402,762.68 : x
  2. Step 2: Convert to fraction form
    689,297.96/951,090.35 = 402,762.68/x
  3. Step 3: Cross multiply
    689,297.96x = 951,090.35 × 402,762.68
  4. Step 4: Simplify right side
    689,297.96x = 383,063,691,518.87
  5. Step 5: Solve for x
    x = 383,063,691,518.87/689,297.96
  6. Step 6: Final answer
    x = 555,730.20

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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.