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Finding the Fourth Proportional to 653,073.20, 978,400.20 and 371,754.80

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Solution

The fourth proportional to 653,073.20, 978,400.20 and 371,754.80 is: 556,943.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,073.20 : 978,400.20 = 371,754.80 : x
  2. Step 2: Convert to fraction form
    653,073.20/978,400.20 = 371,754.80/x
  3. Step 3: Cross multiply
    653,073.20x = 978,400.20 × 371,754.80
  4. Step 4: Simplify right side
    653,073.20x = 363,724,970,670.96
  5. Step 5: Solve for x
    x = 363,724,970,670.96/653,073.20
  6. Step 6: Final answer
    x = 556,943.65

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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.