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Finding the Fourth Proportional to 1,210,405.08, 1,815,899.22 and 368,905.08

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Solution

The fourth proportional to 1,210,405.08, 1,815,899.22 and 368,905.08 is: 553,446.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,405.08 : 1,815,899.22 = 368,905.08 : x
  2. Step 2: Convert to fraction form
    1,210,405.08/1,815,899.22 = 368,905.08/x
  3. Step 3: Cross multiply
    1,210,405.08x = 1,815,899.22 × 368,905.08
  4. Step 4: Simplify right side
    1,210,405.08x = 669,894,447,026.04
  5. Step 5: Solve for x
    x = 669,894,447,026.04/1,210,405.08
  6. Step 6: Final answer
    x = 553,446.49

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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.