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Finding the Fourth Proportional to 659,994.20, 988,241.70 and 520,026.20

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Solution

The fourth proportional to 659,994.20, 988,241.70 and 520,026.20 is: 778,660.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,994.20 : 988,241.70 = 520,026.20 : x
  2. Step 2: Convert to fraction form
    659,994.20/988,241.70 = 520,026.20/x
  3. Step 3: Cross multiply
    659,994.20x = 988,241.70 × 520,026.20
  4. Step 4: Simplify right side
    659,994.20x = 513,911,575,932.54
  5. Step 5: Solve for x
    x = 513,911,575,932.54/659,994.20
  6. Step 6: Final answer
    x = 778,660.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.