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Finding the Fourth Proportional to 682,609.75, 942,001.86 and 380,803.75

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Solution

The fourth proportional to 682,609.75, 942,001.86 and 380,803.75 is: 525,509.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,609.75 : 942,001.86 = 380,803.75 : x
  2. Step 2: Convert to fraction form
    682,609.75/942,001.86 = 380,803.75/x
  3. Step 3: Cross multiply
    682,609.75x = 942,001.86 × 380,803.75
  4. Step 4: Simplify right side
    682,609.75x = 358,717,840,794.98
  5. Step 5: Solve for x
    x = 358,717,840,794.98/682,609.75
  6. Step 6: Final answer
    x = 525,509.40

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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.