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Finding the Fourth Proportional to 324,438.40, 486,657.60 and 286,384.60

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Solution

The fourth proportional to 324,438.40, 486,657.60 and 286,384.60 is: 429,576.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,438.40 : 486,657.60 = 286,384.60 : x
  2. Step 2: Convert to fraction form
    324,438.40/486,657.60 = 286,384.60/x
  3. Step 3: Cross multiply
    324,438.40x = 486,657.60 × 286,384.60
  4. Step 4: Simplify right side
    324,438.40x = 139,371,242,112.96
  5. Step 5: Solve for x
    x = 139,371,242,112.96/324,438.40
  6. Step 6: Final answer
    x = 429,576.90

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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.