Home / 806,429.80-1,209,644.70-619,805.80

Finding the Fourth Proportional to 806,429.80, 1,209,644.70 and 619,805.80

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Solution

The fourth proportional to 806,429.80, 1,209,644.70 and 619,805.80 is: 929,708.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,429.80 : 1,209,644.70 = 619,805.80 : x
  2. Step 2: Convert to fraction form
    806,429.80/1,209,644.70 = 619,805.80/x
  3. Step 3: Cross multiply
    806,429.80x = 1,209,644.70 × 619,805.80
  4. Step 4: Simplify right side
    806,429.80x = 749,744,800,999.26
  5. Step 5: Solve for x
    x = 749,744,800,999.26/806,429.80
  6. Step 6: Final answer
    x = 929,708.70

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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.