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Finding the Fourth Proportional to 460,833.12, 691,254.48 and 128,409.12

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Solution

The fourth proportional to 460,833.12, 691,254.48 and 128,409.12 is: 192,615.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,833.12 : 691,254.48 = 128,409.12 : x
  2. Step 2: Convert to fraction form
    460,833.12/691,254.48 = 128,409.12/x
  3. Step 3: Cross multiply
    460,833.12x = 691,254.48 × 128,409.12
  4. Step 4: Simplify right side
    460,833.12x = 88,763,379,472.86
  5. Step 5: Solve for x
    x = 88,763,379,472.86/460,833.12
  6. Step 6: Final answer
    x = 192,615.02

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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.