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Finding the Fourth Proportional to 654,992.80, 903,880.80 and 368,512.20

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Solution

The fourth proportional to 654,992.80, 903,880.80 and 368,512.20 is: 508,541.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,992.80 : 903,880.80 = 368,512.20 : x
  2. Step 2: Convert to fraction form
    654,992.80/903,880.80 = 368,512.20/x
  3. Step 3: Cross multiply
    654,992.80x = 903,880.80 × 368,512.20
  4. Step 4: Simplify right side
    654,992.80x = 333,091,102,145.76
  5. Step 5: Solve for x
    x = 333,091,102,145.76/654,992.80
  6. Step 6: Final answer
    x = 508,541.63

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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.