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Finding the Fourth Proportional to 608,424, 839,628 and 340,203.84

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Solution

The fourth proportional to 608,424, 839,628 and 340,203.84 is: 469,482.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,424 : 839,628 = 340,203.84 : x
  2. Step 2: Convert to fraction form
    608,424/839,628 = 340,203.84/x
  3. Step 3: Cross multiply
    608,424x = 839,628 × 340,203.84
  4. Step 4: Simplify right side
    608,424x = 285,644,669,771.52
  5. Step 5: Solve for x
    x = 285,644,669,771.52/608,424
  6. Step 6: Final answer
    x = 469,482.91

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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.