Home / 858,906.96-1,287,831.28-290,234.32

Finding the Fourth Proportional to 858,906.96, 1,287,831.28 and 290,234.32

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Solution

The fourth proportional to 858,906.96, 1,287,831.28 and 290,234.32 is: 435,172.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,906.96 : 1,287,831.28 = 290,234.32 : x
  2. Step 2: Convert to fraction form
    858,906.96/1,287,831.28 = 290,234.32/x
  3. Step 3: Cross multiply
    858,906.96x = 1,287,831.28 × 290,234.32
  4. Step 4: Simplify right side
    858,906.96x = 373,772,835,825.53
  5. Step 5: Solve for x
    x = 373,772,835,825.53/858,906.96
  6. Step 6: Final answer
    x = 435,172.67

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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.