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Finding the Fourth Proportional to 666,607.25, 1,000,015.16 and 217,223.81

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Solution

The fourth proportional to 666,607.25, 1,000,015.16 and 217,223.81 is: 325,869.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,607.25 : 1,000,015.16 = 217,223.81 : x
  2. Step 2: Convert to fraction form
    666,607.25/1,000,015.16 = 217,223.81/x
  3. Step 3: Cross multiply
    666,607.25x = 1,000,015.16 × 217,223.81
  4. Step 4: Simplify right side
    666,607.25x = 217,227,102,026.84
  5. Step 5: Solve for x
    x = 217,227,102,026.84/666,607.25
  6. Step 6: Final answer
    x = 325,869.70

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1.5x scale

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.