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Finding the Fourth Proportional to 1,302,611.40, 1,953,917.10 and 804,947.40

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Solution

The fourth proportional to 1,302,611.40, 1,953,917.10 and 804,947.40 is: 1,207,421.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,302,611.40 : 1,953,917.10 = 804,947.40 : x
  2. Step 2: Convert to fraction form
    1,302,611.40/1,953,917.10 = 804,947.40/x
  3. Step 3: Cross multiply
    1,302,611.40x = 1,953,917.10 × 804,947.40
  4. Step 4: Simplify right side
    1,302,611.40x = 1,572,800,489,460.54
  5. Step 5: Solve for x
    x = 1,572,800,489,460.54/1,302,611.40
  6. Step 6: Final answer
    x = 1,207,421.10

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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.