Home / 690,738-1,036,059.48-424,539.60

Finding the Fourth Proportional to 690,738, 1,036,059.48 and 424,539.60

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Solution

The fourth proportional to 690,738, 1,036,059.48 and 424,539.60 is: 636,780.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,738 : 1,036,059.48 = 424,539.60 : x
  2. Step 2: Convert to fraction form
    690,738/1,036,059.48 = 424,539.60/x
  3. Step 3: Cross multiply
    690,738x = 1,036,059.48 × 424,539.60
  4. Step 4: Simplify right side
    690,738x = 439,848,277,215.41
  5. Step 5: Solve for x
    x = 439,848,277,215.41/690,738
  6. Step 6: Final answer
    x = 636,780.19

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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.