Home / 782,209,328.40-1,173,313,992.60-419,412,272.40

Finding the Fourth Proportional to 782,209,328.40, 1,173,313,992.60 and 419,412,272.40

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Solution

The fourth proportional to 782,209,328.40, 1,173,313,992.60 and 419,412,272.40 is: 629,118,408.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,209,328.40 : 1,173,313,992.60 = 419,412,272.40 : x
  2. Step 2: Convert to fraction form
    782,209,328.40/1,173,313,992.60 = 419,412,272.40/x
  3. Step 3: Cross multiply
    782,209,328.40x = 1,173,313,992.60 × 419,412,272.40
  4. Step 4: Simplify right side
    782,209,328.40x = 492,102,287,875,082,688
  5. Step 5: Solve for x
    x = 492,102,287,875,082,688/782,209,328.40
  6. Step 6: Final answer
    x = 629,118,408.60

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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.