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Finding the Fourth Proportional to 572,776.80, 790,383.60 and 346,408.80

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Solution

The fourth proportional to 572,776.80, 790,383.60 and 346,408.80 is: 478,014.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,776.80 : 790,383.60 = 346,408.80 : x
  2. Step 2: Convert to fraction form
    572,776.80/790,383.60 = 346,408.80/x
  3. Step 3: Cross multiply
    572,776.80x = 790,383.60 × 346,408.80
  4. Step 4: Simplify right side
    572,776.80x = 273,795,834,415.68
  5. Step 5: Solve for x
    x = 273,795,834,415.68/572,776.80
  6. Step 6: Final answer
    x = 478,014.88

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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.