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Finding the Fourth Proportional to 630,993.46, 870,790.20 and 359,100.46

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Solution

The fourth proportional to 630,993.46, 870,790.20 and 359,100.46 is: 495,569.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,993.46 : 870,790.20 = 359,100.46 : x
  2. Step 2: Convert to fraction form
    630,993.46/870,790.20 = 359,100.46/x
  3. Step 3: Cross multiply
    630,993.46x = 870,790.20 × 359,100.46
  4. Step 4: Simplify right side
    630,993.46x = 312,701,161,383.49
  5. Step 5: Solve for x
    x = 312,701,161,383.49/630,993.46
  6. Step 6: Final answer
    x = 495,569.58

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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.