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Finding the Fourth Proportional to 806,999.10, 1,210,369.05 and 245,903.10

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Solution

The fourth proportional to 806,999.10, 1,210,369.05 and 245,903.10 is: 368,815.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,999.10 : 1,210,369.05 = 245,903.10 : x
  2. Step 2: Convert to fraction form
    806,999.10/1,210,369.05 = 245,903.10/x
  3. Step 3: Cross multiply
    806,999.10x = 1,210,369.05 × 245,903.10
  4. Step 4: Simplify right side
    806,999.10x = 297,633,501,539.06
  5. Step 5: Solve for x
    x = 297,633,501,539.06/806,999.10
  6. Step 6: Final answer
    x = 368,815.16

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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.