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Finding the Fourth Proportional to 460,453.50, 690,719.37 and 128,029.50

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Solution

The fourth proportional to 460,453.50, 690,719.37 and 128,029.50 is: 192,055.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,453.50 : 690,719.37 = 128,029.50 : x
  2. Step 2: Convert to fraction form
    460,453.50/690,719.37 = 128,029.50/x
  3. Step 3: Cross multiply
    460,453.50x = 690,719.37 × 128,029.50
  4. Step 4: Simplify right side
    460,453.50x = 88,432,455,581.42
  5. Step 5: Solve for x
    x = 88,432,455,581.42/460,453.50
  6. Step 6: Final answer
    x = 192,055.13

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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.