Home / 402,524,761.20-603,787,141.80-305,778,879.60

Finding the Fourth Proportional to 402,524,761.20, 603,787,141.80 and 305,778,879.60

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Solution

The fourth proportional to 402,524,761.20, 603,787,141.80 and 305,778,879.60 is: 458,668,319.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,524,761.20 : 603,787,141.80 = 305,778,879.60 : x
  2. Step 2: Convert to fraction form
    402,524,761.20/603,787,141.80 = 305,778,879.60/x
  3. Step 3: Cross multiply
    402,524,761.20x = 603,787,141.80 × 305,778,879.60
  4. Step 4: Simplify right side
    402,524,761.20x = 184,625,355,736,490,336
  5. Step 5: Solve for x
    x = 184,625,355,736,490,336/402,524,761.20
  6. Step 6: Final answer
    x = 458,668,319.40

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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.