Home / 434,246.76-647,519.31-405,290.88

Finding the Fourth Proportional to 434,246.76, 647,519.31 and 405,290.88

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Solution

The fourth proportional to 434,246.76, 647,519.31 and 405,290.88 is: 604,342.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,246.76 : 647,519.31 = 405,290.88 : x
  2. Step 2: Convert to fraction form
    434,246.76/647,519.31 = 405,290.88/x
  3. Step 3: Cross multiply
    434,246.76x = 647,519.31 × 405,290.88
  4. Step 4: Simplify right side
    434,246.76x = 262,433,670,966.89
  5. Step 5: Solve for x
    x = 262,433,670,966.89/434,246.76
  6. Step 6: Final answer
    x = 604,342.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.