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Finding the Fourth Proportional to 679,364,430.80, 1,017,534,991.80 and 558,432,078.80

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Solution

The fourth proportional to 679,364,430.80, 1,017,534,991.80 and 558,432,078.80 is: 836,405,550.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,364,430.80 : 1,017,534,991.80 = 558,432,078.80 : x
  2. Step 2: Convert to fraction form
    679,364,430.80/1,017,534,991.80 = 558,432,078.80/x
  3. Step 3: Cross multiply
    679,364,430.80x = 1,017,534,991.80 × 558,432,078.80
  4. Step 4: Simplify right side
    679,364,430.80x = 568,224,180,722,614,848
  5. Step 5: Solve for x
    x = 568,224,180,722,614,848/679,364,430.80
  6. Step 6: Final answer
    x = 836,405,550.48

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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.