Home / 1,201,235.20-1,801,415.40-402,542.80

Finding the Fourth Proportional to 1,201,235.20, 1,801,415.40 and 402,542.80

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Solution

The fourth proportional to 1,201,235.20, 1,801,415.40 and 402,542.80 is: 603,667.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201,235.20 : 1,801,415.40 = 402,542.80 : x
  2. Step 2: Convert to fraction form
    1,201,235.20/1,801,415.40 = 402,542.80/x
  3. Step 3: Cross multiply
    1,201,235.20x = 1,801,415.40 × 402,542.80
  4. Step 4: Simplify right side
    1,201,235.20x = 725,146,799,079.12
  5. Step 5: Solve for x
    x = 725,146,799,079.12/1,201,235.20
  6. Step 6: Final answer
    x = 603,667.62

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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.