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Finding the Fourth Proportional to 489,646,973.80, 734,470,460.70 and 485,112,010.60

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Solution

The fourth proportional to 489,646,973.80, 734,470,460.70 and 485,112,010.60 is: 727,668,015.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,646,973.80 : 734,470,460.70 = 485,112,010.60 : x
  2. Step 2: Convert to fraction form
    489,646,973.80/734,470,460.70 = 485,112,010.60/x
  3. Step 3: Cross multiply
    489,646,973.80x = 734,470,460.70 × 485,112,010.60
  4. Step 4: Simplify right side
    489,646,973.80x = 356,300,441,916,485,312
  5. Step 5: Solve for x
    x = 356,300,441,916,485,312/489,646,973.80
  6. Step 6: Final answer
    x = 727,668,015.90

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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.