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Finding the Fourth Proportional to 572,558.34, 790,126.47 and 317,910.54

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Solution

The fourth proportional to 572,558.34, 790,126.47 and 317,910.54 is: 438,714.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,558.34 : 790,126.47 = 317,910.54 : x
  2. Step 2: Convert to fraction form
    572,558.34/790,126.47 = 317,910.54/x
  3. Step 3: Cross multiply
    572,558.34x = 790,126.47 × 317,910.54
  4. Step 4: Simplify right side
    572,558.34x = 251,189,532,745.99
  5. Step 5: Solve for x
    x = 251,189,532,745.99/572,558.34
  6. Step 6: Final answer
    x = 438,714.30

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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.