Home / 525,905.60-789,376.80-259,966.40

Finding the Fourth Proportional to 525,905.60, 789,376.80 and 259,966.40

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Solution

The fourth proportional to 525,905.60, 789,376.80 and 259,966.40 is: 390,205.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,905.60 : 789,376.80 = 259,966.40 : x
  2. Step 2: Convert to fraction form
    525,905.60/789,376.80 = 259,966.40/x
  3. Step 3: Cross multiply
    525,905.60x = 789,376.80 × 259,966.40
  4. Step 4: Simplify right side
    525,905.60x = 205,211,444,939.52
  5. Step 5: Solve for x
    x = 205,211,444,939.52/525,905.60
  6. Step 6: Final answer
    x = 390,205.86

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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.