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Finding the Fourth Proportional to 885,334,652.40, 1,328,001,978.60 and 621,314,763.60

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Solution

The fourth proportional to 885,334,652.40, 1,328,001,978.60 and 621,314,763.60 is: 931,972,145.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,334,652.40 : 1,328,001,978.60 = 621,314,763.60 : x
  2. Step 2: Convert to fraction form
    885,334,652.40/1,328,001,978.60 = 621,314,763.60/x
  3. Step 3: Cross multiply
    885,334,652.40x = 1,328,001,978.60 × 621,314,763.60
  4. Step 4: Simplify right side
    885,334,652.40x = 825,107,235,394,191,232
  5. Step 5: Solve for x
    x = 825,107,235,394,191,232/885,334,652.40
  6. Step 6: Final answer
    x = 931,972,145.40

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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.