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Finding the Fourth Proportional to 572,262.60, 789,475.86 and 345,777

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Solution

The fourth proportional to 572,262.60, 789,475.86 and 345,777 is: 477,023.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,262.60 : 789,475.86 = 345,777 : x
  2. Step 2: Convert to fraction form
    572,262.60/789,475.86 = 345,777/x
  3. Step 3: Cross multiply
    572,262.60x = 789,475.86 × 345,777
  4. Step 4: Simplify right side
    572,262.60x = 272,982,594,443.22
  5. Step 5: Solve for x
    x = 272,982,594,443.22/572,262.60
  6. Step 6: Final answer
    x = 477,023.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.