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Finding the Fourth Proportional to 653,060.20, 978,380.70 and 371,741.80

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Solution

The fourth proportional to 653,060.20, 978,380.70 and 371,741.80 is: 556,924.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,060.20 : 978,380.70 = 371,741.80 : x
  2. Step 2: Convert to fraction form
    653,060.20/978,380.70 = 371,741.80/x
  3. Step 3: Cross multiply
    653,060.20x = 978,380.70 × 371,741.80
  4. Step 4: Simplify right side
    653,060.20x = 363,705,002,503.26
  5. Step 5: Solve for x
    x = 363,705,002,503.26/653,060.20
  6. Step 6: Final answer
    x = 556,924.16

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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.