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Finding the Fourth Proportional to 455,964.50, 683,946.76 and 123,540.50

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Solution

The fourth proportional to 455,964.50, 683,946.76 and 123,540.50 is: 185,310.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,964.50 : 683,946.76 = 123,540.50 : x
  2. Step 2: Convert to fraction form
    455,964.50/683,946.76 = 123,540.50/x
  3. Step 3: Cross multiply
    455,964.50x = 683,946.76 × 123,540.50
  4. Step 4: Simplify right side
    455,964.50x = 84,495,124,703.78
  5. Step 5: Solve for x
    x = 84,495,124,703.78/455,964.50
  6. Step 6: Final answer
    x = 185,310.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.