Home / 1,200,509.71-1,800,767.65-490,537.75

Finding the Fourth Proportional to 1,200,509.71, 1,800,767.65 and 490,537.75

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Solution

The fourth proportional to 1,200,509.71, 1,800,767.65 and 490,537.75 is: 735,807.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,509.71 : 1,800,767.65 = 490,537.75 : x
  2. Step 2: Convert to fraction form
    1,200,509.71/1,800,767.65 = 490,537.75/x
  3. Step 3: Cross multiply
    1,200,509.71x = 1,800,767.65 × 490,537.75
  4. Step 4: Simplify right side
    1,200,509.71x = 883,344,508,851.10
  5. Step 5: Solve for x
    x = 883,344,508,851.10/1,200,509.71
  6. Step 6: Final answer
    x = 735,807.88

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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.