Home / 859,205.30-1,287,749.48-353,450.61

Finding the Fourth Proportional to 859,205.30, 1,287,749.48 and 353,450.61

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Solution

The fourth proportional to 859,205.30, 1,287,749.48 and 353,450.61 is: 529,740.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,205.30 : 1,287,749.48 = 353,450.61 : x
  2. Step 2: Convert to fraction form
    859,205.30/1,287,749.48 = 353,450.61/x
  3. Step 3: Cross multiply
    859,205.30x = 1,287,749.48 × 353,450.61
  4. Step 4: Simplify right side
    859,205.30x = 455,155,837,465.93
  5. Step 5: Solve for x
    x = 455,155,837,465.93/859,205.30
  6. Step 6: Final answer
    x = 529,740.49

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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.