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Finding the Fourth Proportional to 666,782.04, 1,000,205.28 and 217,502.04

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Solution

The fourth proportional to 666,782.04, 1,000,205.28 and 217,502.04 is: 326,263.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,782.04 : 1,000,205.28 = 217,502.04 : x
  2. Step 2: Convert to fraction form
    666,782.04/1,000,205.28 = 217,502.04/x
  3. Step 3: Cross multiply
    666,782.04x = 1,000,205.28 × 217,502.04
  4. Step 4: Simplify right side
    666,782.04x = 217,546,688,818.77
  5. Step 5: Solve for x
    x = 217,546,688,818.77/666,782.04
  6. Step 6: Final answer
    x = 326,263.57

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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.