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Finding the Fourth Proportional to 559,378.60, 839,067.90 and 346,802.20

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Solution

The fourth proportional to 559,378.60, 839,067.90 and 346,802.20 is: 520,203.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,378.60 : 839,067.90 = 346,802.20 : x
  2. Step 2: Convert to fraction form
    559,378.60/839,067.90 = 346,802.20/x
  3. Step 3: Cross multiply
    559,378.60x = 839,067.90 × 346,802.20
  4. Step 4: Simplify right side
    559,378.60x = 290,990,593,669.38
  5. Step 5: Solve for x
    x = 290,990,593,669.38/559,378.60
  6. Step 6: Final answer
    x = 520,203.30

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Similar ratio
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1.5x scale

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.