Home / 905,676.85-1,249,836.68-497,820.49

Finding the Fourth Proportional to 905,676.85, 1,249,836.68 and 497,820.49

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Solution

The fourth proportional to 905,676.85, 1,249,836.68 and 497,820.49 is: 686,993.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    905,676.85 : 1,249,836.68 = 497,820.49 : x
  2. Step 2: Convert to fraction form
    905,676.85/1,249,836.68 = 497,820.49/x
  3. Step 3: Cross multiply
    905,676.85x = 1,249,836.68 × 497,820.49
  4. Step 4: Simplify right side
    905,676.85x = 622,194,299,719.29
  5. Step 5: Solve for x
    x = 622,194,299,719.29/905,676.85
  6. Step 6: Final answer
    x = 686,993.71

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1.5x scale

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.