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Finding the Fourth Proportional to 639,364.60, 882,260.32 and 352,866.19

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Solution

The fourth proportional to 639,364.60, 882,260.32 and 352,866.19 is: 486,920.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,364.60 : 882,260.32 = 352,866.19 : x
  2. Step 2: Convert to fraction form
    639,364.60/882,260.32 = 352,866.19/x
  3. Step 3: Cross multiply
    639,364.60x = 882,260.32 × 352,866.19
  4. Step 4: Simplify right side
    639,364.60x = 311,319,837,706.58
  5. Step 5: Solve for x
    x = 311,319,837,706.58/639,364.60
  6. Step 6: Final answer
    x = 486,920.67

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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.