Home / 780,472.80-1,169,999.28-300,394.35

Finding the Fourth Proportional to 780,472.80, 1,169,999.28 and 300,394.35

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Solution

The fourth proportional to 780,472.80, 1,169,999.28 and 300,394.35 is: 450,318.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,472.80 : 1,169,999.28 = 300,394.35 : x
  2. Step 2: Convert to fraction form
    780,472.80/1,169,999.28 = 300,394.35/x
  3. Step 3: Cross multiply
    780,472.80x = 1,169,999.28 × 300,394.35
  4. Step 4: Simplify right side
    780,472.80x = 351,461,173,216.07
  5. Step 5: Solve for x
    x = 351,461,173,216.07/780,472.80
  6. Step 6: Final answer
    x = 450,318.29

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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.