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Finding the Fourth Proportional to 612,395.52, 845,134.58 and 340,467.88

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Solution

The fourth proportional to 612,395.52, 845,134.58 and 340,467.88 is: 469,861.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,395.52 : 845,134.58 = 340,467.88 : x
  2. Step 2: Convert to fraction form
    612,395.52/845,134.58 = 340,467.88/x
  3. Step 3: Cross multiply
    612,395.52x = 845,134.58 × 340,467.88
  4. Step 4: Simplify right side
    612,395.52x = 287,741,178,767.29
  5. Step 5: Solve for x
    x = 287,741,178,767.29/612,395.52
  6. Step 6: Final answer
    x = 469,861.67

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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.