Home / 1,139,806.08-1,709,138.88-381,386.88

Finding the Fourth Proportional to 1,139,806.08, 1,709,138.88 and 381,386.88

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Solution

The fourth proportional to 1,139,806.08, 1,709,138.88 and 381,386.88 is: 571,889.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,139,806.08 : 1,709,138.88 = 381,386.88 : x
  2. Step 2: Convert to fraction form
    1,139,806.08/1,709,138.88 = 381,386.88/x
  3. Step 3: Cross multiply
    1,139,806.08x = 1,709,138.88 × 381,386.88
  4. Step 4: Simplify right side
    1,139,806.08x = 651,843,144,929.89
  5. Step 5: Solve for x
    x = 651,843,144,929.89/1,139,806.08
  6. Step 6: Final answer
    x = 571,889.51

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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.