Home / 743,520.77-1,115,305.40-353,942.66

Finding the Fourth Proportional to 743,520.77, 1,115,305.40 and 353,942.66

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Solution

The fourth proportional to 743,520.77, 1,115,305.40 and 353,942.66 is: 530,925.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,520.77 : 1,115,305.40 = 353,942.66 : x
  2. Step 2: Convert to fraction form
    743,520.77/1,115,305.40 = 353,942.66/x
  3. Step 3: Cross multiply
    743,520.77x = 1,115,305.40 × 353,942.66
  4. Step 4: Simplify right side
    743,520.77x = 394,754,163,661.48
  5. Step 5: Solve for x
    x = 394,754,163,661.48/743,520.77
  6. Step 6: Final answer
    x = 530,925.54

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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.