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Finding the Fourth Proportional to 474,898.60, 655,359.78 and 283,911.40

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Solution

The fourth proportional to 474,898.60, 655,359.78 and 283,911.40 is: 391,797.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,898.60 : 655,359.78 = 283,911.40 : x
  2. Step 2: Convert to fraction form
    474,898.60/655,359.78 = 283,911.40/x
  3. Step 3: Cross multiply
    474,898.60x = 655,359.78 × 283,911.40
  4. Step 4: Simplify right side
    474,898.60x = 186,064,112,643.49
  5. Step 5: Solve for x
    x = 186,064,112,643.49/474,898.60
  6. Step 6: Final answer
    x = 391,797.56

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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.