Home / 685,665.81-1,029,162.11-330,929.55

Finding the Fourth Proportional to 685,665.81, 1,029,162.11 and 330,929.55

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Solution

The fourth proportional to 685,665.81, 1,029,162.11 and 330,929.55 is: 496,714.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,665.81 : 1,029,162.11 = 330,929.55 : x
  2. Step 2: Convert to fraction form
    685,665.81/1,029,162.11 = 330,929.55/x
  3. Step 3: Cross multiply
    685,665.81x = 1,029,162.11 × 330,929.55
  4. Step 4: Simplify right side
    685,665.81x = 340,580,152,284.70
  5. Step 5: Solve for x
    x = 340,580,152,284.70/685,665.81
  6. Step 6: Final answer
    x = 496,714.50

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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.