Home / 851,821.37-1,175,514.48-489,315.45

Finding the Fourth Proportional to 851,821.37, 1,175,514.48 and 489,315.45

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Solution

The fourth proportional to 851,821.37, 1,175,514.48 and 489,315.45 is: 675,255.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,821.37 : 1,175,514.48 = 489,315.45 : x
  2. Step 2: Convert to fraction form
    851,821.37/1,175,514.48 = 489,315.45/x
  3. Step 3: Cross multiply
    851,821.37x = 1,175,514.48 × 489,315.45
  4. Step 4: Simplify right side
    851,821.37x = 575,197,396,762.72
  5. Step 5: Solve for x
    x = 575,197,396,762.72/851,821.37
  6. Step 6: Final answer
    x = 675,255.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.