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Finding the Fourth Proportional to 555,059.39, 765,976.50 and 313,336.76

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Solution

The fourth proportional to 555,059.39, 765,976.50 and 313,336.76 is: 432,401.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,059.39 : 765,976.50 = 313,336.76 : x
  2. Step 2: Convert to fraction form
    555,059.39/765,976.50 = 313,336.76/x
  3. Step 3: Cross multiply
    555,059.39x = 765,976.50 × 313,336.76
  4. Step 4: Simplify right side
    555,059.39x = 240,008,590,916.26
  5. Step 5: Solve for x
    x = 240,008,590,916.26/555,059.39
  6. Step 6: Final answer
    x = 432,401.64

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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.