Home / 549,905.68-758,918.73-320,450.50

Finding the Fourth Proportional to 549,905.68, 758,918.73 and 320,450.50

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Solution

The fourth proportional to 549,905.68, 758,918.73 and 320,450.50 is: 442,250.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    549,905.68 : 758,918.73 = 320,450.50 : x
  2. Step 2: Convert to fraction form
    549,905.68/758,918.73 = 320,450.50/x
  3. Step 3: Cross multiply
    549,905.68x = 758,918.73 × 320,450.50
  4. Step 4: Simplify right side
    549,905.68x = 243,195,886,487.87
  5. Step 5: Solve for x
    x = 243,195,886,487.87/549,905.68
  6. Step 6: Final answer
    x = 442,250.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.