Home / 809,412.30-1,214,458.65-434,997.90

Finding the Fourth Proportional to 809,412.30, 1,214,458.65 and 434,997.90

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Solution

The fourth proportional to 809,412.30, 1,214,458.65 and 434,997.90 is: 652,679.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,412.30 : 1,214,458.65 = 434,997.90 : x
  2. Step 2: Convert to fraction form
    809,412.30/1,214,458.65 = 434,997.90/x
  3. Step 3: Cross multiply
    809,412.30x = 1,214,458.65 × 434,997.90
  4. Step 4: Simplify right side
    809,412.30x = 528,286,962,386.84
  5. Step 5: Solve for x
    x = 528,286,962,386.84/809,412.30
  6. Step 6: Final answer
    x = 652,679.68

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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.