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Finding the Fourth Proportional to 682,609.50, 942,001.52 and 380,803.50

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Solution

The fourth proportional to 682,609.50, 942,001.52 and 380,803.50 is: 525,509.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,609.50 : 942,001.52 = 380,803.50 : x
  2. Step 2: Convert to fraction form
    682,609.50/942,001.52 = 380,803.50/x
  3. Step 3: Cross multiply
    682,609.50x = 942,001.52 × 380,803.50
  4. Step 4: Simplify right side
    682,609.50x = 358,717,473,917.30
  5. Step 5: Solve for x
    x = 358,717,473,917.30/682,609.50
  6. Step 6: Final answer
    x = 525,509.06

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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.