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Finding the Fourth Proportional to 620,064.42, 855,622.80 and 348,162

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Solution

The fourth proportional to 620,064.42, 855,622.80 and 348,162 is: 480,426.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,064.42 : 855,622.80 = 348,162 : x
  2. Step 2: Convert to fraction form
    620,064.42/855,622.80 = 348,162/x
  3. Step 3: Cross multiply
    620,064.42x = 855,622.80 × 348,162
  4. Step 4: Simplify right side
    620,064.42x = 297,895,345,293.60
  5. Step 5: Solve for x
    x = 297,895,345,293.60/620,064.42
  6. Step 6: Final answer
    x = 480,426.45

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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.