Home / 1,121,707.50-1,682,564.85-280,259.34

Finding the Fourth Proportional to 1,121,707.50, 1,682,564.85 and 280,259.34

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Solution

The fourth proportional to 1,121,707.50, 1,682,564.85 and 280,259.34 is: 420,389.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,707.50 : 1,682,564.85 = 280,259.34 : x
  2. Step 2: Convert to fraction form
    1,121,707.50/1,682,564.85 = 280,259.34/x
  3. Step 3: Cross multiply
    1,121,707.50x = 1,682,564.85 × 280,259.34
  4. Step 4: Simplify right side
    1,121,707.50x = 471,554,514,368.20
  5. Step 5: Solve for x
    x = 471,554,514,368.20/1,121,707.50
  6. Step 6: Final answer
    x = 420,389.91

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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.