Home / 685,615.06-1,029,085.98-330,878.80

Finding the Fourth Proportional to 685,615.06, 1,029,085.98 and 330,878.80

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Solution

The fourth proportional to 685,615.06, 1,029,085.98 and 330,878.80 is: 496,638.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,615.06 : 1,029,085.98 = 330,878.80 : x
  2. Step 2: Convert to fraction form
    685,615.06/1,029,085.98 = 330,878.80/x
  3. Step 3: Cross multiply
    685,615.06x = 1,029,085.98 × 330,878.80
  4. Step 4: Simplify right side
    685,615.06x = 340,502,734,159.22
  5. Step 5: Solve for x
    x = 340,502,734,159.22/685,615.06
  6. Step 6: Final answer
    x = 496,638.35

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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.