Home / 1,438,615-1,985,288.70-802,711

Finding the Fourth Proportional to 1,438,615, 1,985,288.70 and 802,711

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Solution

The fourth proportional to 1,438,615, 1,985,288.70 and 802,711 is: 1,107,741.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,615 : 1,985,288.70 = 802,711 : x
  2. Step 2: Convert to fraction form
    1,438,615/1,985,288.70 = 802,711/x
  3. Step 3: Cross multiply
    1,438,615x = 1,985,288.70 × 802,711
  4. Step 4: Simplify right side
    1,438,615x = 1,593,613,077,665.70
  5. Step 5: Solve for x
    x = 1,593,613,077,665.70/1,438,615
  6. Step 6: Final answer
    x = 1,107,741.18

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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.