Home / 1,339,720.20-2,009,547.90-806,837.40

Finding the Fourth Proportional to 1,339,720.20, 2,009,547.90 and 806,837.40

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Solution

The fourth proportional to 1,339,720.20, 2,009,547.90 and 806,837.40 is: 1,210,236.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339,720.20 : 2,009,547.90 = 806,837.40 : x
  2. Step 2: Convert to fraction form
    1,339,720.20/2,009,547.90 = 806,837.40/x
  3. Step 3: Cross multiply
    1,339,720.20x = 2,009,547.90 × 806,837.40
  4. Step 4: Simplify right side
    1,339,720.20x = 1,621,378,402,811.46
  5. Step 5: Solve for x
    x = 1,621,378,402,811.46/1,339,720.20
  6. Step 6: Final answer
    x = 1,210,236.59

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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.