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Finding the Fourth Proportional to 608,671.72, 839,966.34 and 340,399.72

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Solution

The fourth proportional to 608,671.72, 839,966.34 and 340,399.72 is: 469,751.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,671.72 : 839,966.34 = 340,399.72 : x
  2. Step 2: Convert to fraction form
    608,671.72/839,966.34 = 340,399.72/x
  3. Step 3: Cross multiply
    608,671.72x = 839,966.34 × 340,399.72
  4. Step 4: Simplify right side
    608,671.72x = 285,924,306,945.43
  5. Step 5: Solve for x
    x = 285,924,306,945.43/608,671.72
  6. Step 6: Final answer
    x = 469,751.26

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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.