Home / 722,928,237.20-1,083,636,528.60-394,899,232.40

Finding the Fourth Proportional to 722,928,237.20, 1,083,636,528.60 and 394,899,232.40

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Solution

The fourth proportional to 722,928,237.20, 1,083,636,528.60 and 394,899,232.40 is: 591,935,978.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,928,237.20 : 1,083,636,528.60 = 394,899,232.40 : x
  2. Step 2: Convert to fraction form
    722,928,237.20/1,083,636,528.60 = 394,899,232.40/x
  3. Step 3: Cross multiply
    722,928,237.20x = 1,083,636,528.60 × 394,899,232.40
  4. Step 4: Simplify right side
    722,928,237.20x = 427,927,233,344,740,608
  5. Step 5: Solve for x
    x = 427,927,233,344,740,608/722,928,237.20
  6. Step 6: Final answer
    x = 591,935,978.32

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1.5x scale

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.