Home / 460,829.07-691,360.23-128,405.07

Finding the Fourth Proportional to 460,829.07, 691,360.23 and 128,405.07

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Solution

The fourth proportional to 460,829.07, 691,360.23 and 128,405.07 is: 192,640.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,829.07 : 691,360.23 = 128,405.07 : x
  2. Step 2: Convert to fraction form
    460,829.07/691,360.23 = 128,405.07/x
  3. Step 3: Cross multiply
    460,829.07x = 691,360.23 × 128,405.07
  4. Step 4: Simplify right side
    460,829.07x = 88,774,158,728.37
  5. Step 5: Solve for x
    x = 88,774,158,728.37/460,829.07
  6. Step 6: Final answer
    x = 192,640.10

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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.