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Finding the Fourth Proportional to 555,665.40, 766,816.38 and 301,016.28

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Solution

The fourth proportional to 555,665.40, 766,816.38 and 301,016.28 is: 415,401.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,665.40 : 766,816.38 = 301,016.28 : x
  2. Step 2: Convert to fraction form
    555,665.40/766,816.38 = 301,016.28/x
  3. Step 3: Cross multiply
    555,665.40x = 766,816.38 × 301,016.28
  4. Step 4: Simplify right side
    555,665.40x = 230,824,214,150.67
  5. Step 5: Solve for x
    x = 230,824,214,150.67/555,665.40
  6. Step 6: Final answer
    x = 415,401.45

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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.