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Finding the Fourth Proportional to 655,971,535.52, 984,638,128.80 and 380,161,628

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Solution

The fourth proportional to 655,971,535.52, 984,638,128.80 and 380,161,628 is: 570,637,007.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,971,535.52 : 984,638,128.80 = 380,161,628 : x
  2. Step 2: Convert to fraction form
    655,971,535.52/984,638,128.80 = 380,161,628/x
  3. Step 3: Cross multiply
    655,971,535.52x = 984,638,128.80 × 380,161,628
  4. Step 4: Simplify right side
    655,971,535.52x = 374,321,634,035,481,664
  5. Step 5: Solve for x
    x = 374,321,634,035,481,664/655,971,535.52
  6. Step 6: Final answer
    x = 570,637,007.50

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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.