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Finding the Fourth Proportional to 666,577.80, 1,000,025.10 and 217,301.64

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Solution

The fourth proportional to 666,577.80, 1,000,025.10 and 217,301.64 is: 326,004.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,577.80 : 1,000,025.10 = 217,301.64 : x
  2. Step 2: Convert to fraction form
    666,577.80/1,000,025.10 = 217,301.64/x
  3. Step 3: Cross multiply
    666,577.80x = 1,000,025.10 × 217,301.64
  4. Step 4: Simplify right side
    666,577.80x = 217,307,094,271.16
  5. Step 5: Solve for x
    x = 217,307,094,271.16/666,577.80
  6. Step 6: Final answer
    x = 326,004.10

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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.