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Finding the Fourth Proportional to 555,395.67, 766,449.68 and 300,746.88

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Solution

The fourth proportional to 555,395.67, 766,449.68 and 300,746.88 is: 415,032.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,395.67 : 766,449.68 = 300,746.88 : x
  2. Step 2: Convert to fraction form
    555,395.67/766,449.68 = 300,746.88/x
  3. Step 3: Cross multiply
    555,395.67x = 766,449.68 × 300,746.88
  4. Step 4: Simplify right side
    555,395.67x = 230,507,348,433.26
  5. Step 5: Solve for x
    x = 230,507,348,433.26/555,395.67
  6. Step 6: Final answer
    x = 415,032.67

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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.