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Finding the Fourth Proportional to 653,289.30, 978,767.55 and 552,978.90

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Solution

The fourth proportional to 653,289.30, 978,767.55 and 552,978.90 is: 828,481.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,289.30 : 978,767.55 = 552,978.90 : x
  2. Step 2: Convert to fraction form
    653,289.30/978,767.55 = 552,978.90/x
  3. Step 3: Cross multiply
    653,289.30x = 978,767.55 × 552,978.90
  4. Step 4: Simplify right side
    653,289.30x = 541,237,803,154.70
  5. Step 5: Solve for x
    x = 541,237,803,154.70/653,289.30
  6. Step 6: Final answer
    x = 828,481.05

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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.