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Finding the Fourth Proportional to 405,000.85, 607,501.28 and 124,481.65

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Solution

The fourth proportional to 405,000.85, 607,501.28 and 124,481.65 is: 186,722.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,000.85 : 607,501.28 = 124,481.65 : x
  2. Step 2: Convert to fraction form
    405,000.85/607,501.28 = 124,481.65/x
  3. Step 3: Cross multiply
    405,000.85x = 607,501.28 × 124,481.65
  4. Step 4: Simplify right side
    405,000.85x = 75,622,761,089.10
  5. Step 5: Solve for x
    x = 75,622,761,089.10/405,000.85
  6. Step 6: Final answer
    x = 186,722.48

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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.