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Finding the Fourth Proportional to 806,645.10, 1,209,967.65 and 806,645.10

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Solution

The fourth proportional to 806,645.10, 1,209,967.65 and 806,645.10 is: 1,209,967.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,645.10 : 1,209,967.65 = 806,645.10 : x
  2. Step 2: Convert to fraction form
    806,645.10/1,209,967.65 = 806,645.10/x
  3. Step 3: Cross multiply
    806,645.10x = 1,209,967.65 × 806,645.10
  4. Step 4: Simplify right side
    806,645.10x = 976,014,476,031.02
  5. Step 5: Solve for x
    x = 976,014,476,031.02/806,645.10
  6. Step 6: Final answer
    x = 1,209,967.65

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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.