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Finding the Fourth Proportional to 511,994.40, 706,817.90 and 374,018.40

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Solution

The fourth proportional to 511,994.40, 706,817.90 and 374,018.40 is: 516,339.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,994.40 : 706,817.90 = 374,018.40 : x
  2. Step 2: Convert to fraction form
    511,994.40/706,817.90 = 374,018.40/x
  3. Step 3: Cross multiply
    511,994.40x = 706,817.90 × 374,018.40
  4. Step 4: Simplify right side
    511,994.40x = 264,362,899,946.31
  5. Step 5: Solve for x
    x = 264,362,899,946.31/511,994.40
  6. Step 6: Final answer
    x = 516,339.43

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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.