Home / 679,868.34-1,019,918.69-280,290.68

Finding the Fourth Proportional to 679,868.34, 1,019,918.69 and 280,290.68

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Solution

The fourth proportional to 679,868.34, 1,019,918.69 and 280,290.68 is: 420,483.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,868.34 : 1,019,918.69 = 280,290.68 : x
  2. Step 2: Convert to fraction form
    679,868.34/1,019,918.69 = 280,290.68/x
  3. Step 3: Cross multiply
    679,868.34x = 1,019,918.69 × 280,290.68
  4. Step 4: Simplify right side
    679,868.34x = 285,873,703,164.81
  5. Step 5: Solve for x
    x = 285,873,703,164.81/679,868.34
  6. Step 6: Final answer
    x = 420,483.92

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1.5x scale

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.