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Finding the Fourth Proportional to 471,279.20, 707,264.40 and 313,455.20

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Solution

The fourth proportional to 471,279.20, 707,264.40 and 313,455.20 is: 470,412.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,279.20 : 707,264.40 = 313,455.20 : x
  2. Step 2: Convert to fraction form
    471,279.20/707,264.40 = 313,455.20/x
  3. Step 3: Cross multiply
    471,279.20x = 707,264.40 × 313,455.20
  4. Step 4: Simplify right side
    471,279.20x = 221,695,703,954.88
  5. Step 5: Solve for x
    x = 221,695,703,954.88/471,279.20
  6. Step 6: Final answer
    x = 470,412.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.