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Finding the Fourth Proportional to 528,455.76, 729,874.64 and 347,974.52

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Solution

The fourth proportional to 528,455.76, 729,874.64 and 347,974.52 is: 480,603.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,455.76 : 729,874.64 = 347,974.52 : x
  2. Step 2: Convert to fraction form
    528,455.76/729,874.64 = 347,974.52/x
  3. Step 3: Cross multiply
    528,455.76x = 729,874.64 × 347,974.52
  4. Step 4: Simplify right side
    528,455.76x = 253,977,777,514.17
  5. Step 5: Solve for x
    x = 253,977,777,514.17/528,455.76
  6. Step 6: Final answer
    x = 480,603.67

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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.