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Finding the Fourth Proportional to 682,885.46, 942,434.12 and 377,020.76

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Solution

The fourth proportional to 682,885.46, 942,434.12 and 377,020.76 is: 520,317.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,885.46 : 942,434.12 = 377,020.76 : x
  2. Step 2: Convert to fraction form
    682,885.46/942,434.12 = 377,020.76/x
  3. Step 3: Cross multiply
    682,885.46x = 942,434.12 × 377,020.76
  4. Step 4: Simplify right side
    682,885.46x = 355,317,221,575.06
  5. Step 5: Solve for x
    x = 355,317,221,575.06/682,885.46
  6. Step 6: Final answer
    x = 520,317.45

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Double scale
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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.