Home / 1,306,628-1,959,942-420,164

Finding the Fourth Proportional to 1,306,628, 1,959,942 and 420,164

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Solution

The fourth proportional to 1,306,628, 1,959,942 and 420,164 is: 630,246

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,306,628 : 1,959,942 = 420,164 : x
  2. Step 2: Convert to fraction form
    1,306,628/1,959,942 = 420,164/x
  3. Step 3: Cross multiply
    1,306,628x = 1,959,942 × 420,164
  4. Step 4: Simplify right side
    1,306,628x = 823,497,070,488
  5. Step 5: Solve for x
    x = 823,497,070,488/1,306,628
  6. Step 6: Final answer
    x = 630,246

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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.