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Finding the Fourth Proportional to 1,663,964.64, 2,296,271.52 and 938,966.40

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Solution

The fourth proportional to 1,663,964.64, 2,296,271.52 and 938,966.40 is: 1,295,773.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,663,964.64 : 2,296,271.52 = 938,966.40 : x
  2. Step 2: Convert to fraction form
    1,663,964.64/2,296,271.52 = 938,966.40/x
  3. Step 3: Cross multiply
    1,663,964.64x = 2,296,271.52 × 938,966.40
  4. Step 4: Simplify right side
    1,663,964.64x = 2,156,121,802,556.93
  5. Step 5: Solve for x
    x = 2,156,121,802,556.93/1,663,964.64
  6. Step 6: Final answer
    x = 1,295,773.81

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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.