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Finding the Fourth Proportional to 460,830.94, 691,363.05 and 128,406.94

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Solution

The fourth proportional to 460,830.94, 691,363.05 and 128,406.94 is: 192,642.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,830.94 : 691,363.05 = 128,406.94 : x
  2. Step 2: Convert to fraction form
    460,830.94/691,363.05 = 128,406.94/x
  3. Step 3: Cross multiply
    460,830.94x = 691,363.05 × 128,406.94
  4. Step 4: Simplify right side
    460,830.94x = 88,775,811,469.63
  5. Step 5: Solve for x
    x = 88,775,811,469.63/460,830.94
  6. Step 6: Final answer
    x = 192,642.91

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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.