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Finding the Fourth Proportional to 555,395.40, 766,448.46 and 300,747.60

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Solution

The fourth proportional to 555,395.40, 766,448.46 and 300,747.60 is: 415,033.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,395.40 : 766,448.46 = 300,747.60 : x
  2. Step 2: Convert to fraction form
    555,395.40/766,448.46 = 300,747.60/x
  3. Step 3: Cross multiply
    555,395.40x = 766,448.46 × 300,747.60
  4. Step 4: Simplify right side
    555,395.40x = 230,507,534,868.70
  5. Step 5: Solve for x
    x = 230,507,534,868.70/555,395.40
  6. Step 6: Final answer
    x = 415,033.21

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1.5x scale

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.