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Finding the Fourth Proportional to 559,870.40, 839,805.60 and 380,244.80

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Solution

The fourth proportional to 559,870.40, 839,805.60 and 380,244.80 is: 570,367.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,870.40 : 839,805.60 = 380,244.80 : x
  2. Step 2: Convert to fraction form
    559,870.40/839,805.60 = 380,244.80/x
  3. Step 3: Cross multiply
    559,870.40x = 839,805.60 × 380,244.80
  4. Step 4: Simplify right side
    559,870.40x = 319,331,712,410.88
  5. Step 5: Solve for x
    x = 319,331,712,410.88/559,870.40
  6. Step 6: Final answer
    x = 570,367.20

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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.