Home / 885,696,985.20-1,328,545,477.80-394,409,305.20

Finding the Fourth Proportional to 885,696,985.20, 1,328,545,477.80 and 394,409,305.20

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Solution

The fourth proportional to 885,696,985.20, 1,328,545,477.80 and 394,409,305.20 is: 591,613,957.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,696,985.20 : 1,328,545,477.80 = 394,409,305.20 : x
  2. Step 2: Convert to fraction form
    885,696,985.20/1,328,545,477.80 = 394,409,305.20/x
  3. Step 3: Cross multiply
    885,696,985.20x = 1,328,545,477.80 × 394,409,305.20
  4. Step 4: Simplify right side
    885,696,985.20x = 523,990,698,825,699,968
  5. Step 5: Solve for x
    x = 523,990,698,825,699,968/885,696,985.20
  6. Step 6: Final answer
    x = 591,613,957.80

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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.