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Finding the Fourth Proportional to 555,642.64, 766,749 and 313,935.40

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Solution

The fourth proportional to 555,642.64, 766,749 and 313,935.40 is: 433,209.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,642.64 : 766,749 = 313,935.40 : x
  2. Step 2: Convert to fraction form
    555,642.64/766,749 = 313,935.40/x
  3. Step 3: Cross multiply
    555,642.64x = 766,749 × 313,935.40
  4. Step 4: Simplify right side
    555,642.64x = 240,709,654,014.60
  5. Step 5: Solve for x
    x = 240,709,654,014.60/555,642.64
  6. Step 6: Final answer
    x = 433,209.47

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.