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Finding the Fourth Proportional to 673,978.60, 1,009,655.70 and 373,922.20

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Solution

The fourth proportional to 673,978.60, 1,009,655.70 and 373,922.20 is: 560,155.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,978.60 : 1,009,655.70 = 373,922.20 : x
  2. Step 2: Convert to fraction form
    673,978.60/1,009,655.70 = 373,922.20/x
  3. Step 3: Cross multiply
    673,978.60x = 1,009,655.70 × 373,922.20
  4. Step 4: Simplify right side
    673,978.60x = 377,532,680,586.54
  5. Step 5: Solve for x
    x = 377,532,680,586.54/673,978.60
  6. Step 6: Final answer
    x = 560,155.29

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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.