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Finding the Fourth Proportional to 978,534.60, 1,467,874.80 and 347,366.40

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Solution

The fourth proportional to 978,534.60, 1,467,874.80 and 347,366.40 is: 521,075.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,534.60 : 1,467,874.80 = 347,366.40 : x
  2. Step 2: Convert to fraction form
    978,534.60/1,467,874.80 = 347,366.40/x
  3. Step 3: Cross multiply
    978,534.60x = 1,467,874.80 × 347,366.40
  4. Step 4: Simplify right side
    978,534.60x = 509,890,384,926.72
  5. Step 5: Solve for x
    x = 509,890,384,926.72/978,534.60
  6. Step 6: Final answer
    x = 521,075.48

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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.