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Finding the Fourth Proportional to 567,590.31, 783,279.92 and 312,950.55

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Solution

The fourth proportional to 567,590.31, 783,279.92 and 312,950.55 is: 431,874.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    567,590.31 : 783,279.92 = 312,950.55 : x
  2. Step 2: Convert to fraction form
    567,590.31/783,279.92 = 312,950.55/x
  3. Step 3: Cross multiply
    567,590.31x = 783,279.92 × 312,950.55
  4. Step 4: Simplify right side
    567,590.31x = 245,127,880,203.20
  5. Step 5: Solve for x
    x = 245,127,880,203.20/567,590.31
  6. Step 6: Final answer
    x = 431,874.67

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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.