Home / 460,831.69-691,364.18-128,407.69

Finding the Fourth Proportional to 460,831.69, 691,364.18 and 128,407.69

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Solution

The fourth proportional to 460,831.69, 691,364.18 and 128,407.69 is: 192,644.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    460,831.69 : 691,364.18 = 128,407.69 : x
  2. Step 2: Convert to fraction form
    460,831.69/691,364.18 = 128,407.69/x
  3. Step 3: Cross multiply
    460,831.69x = 691,364.18 × 128,407.69
  4. Step 4: Simplify right side
    460,831.69x = 88,776,474,932.10
  5. Step 5: Solve for x
    x = 88,776,474,932.10/460,831.69
  6. Step 6: Final answer
    x = 192,644.03

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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.