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Finding the Fourth Proportional to 659,279.98, 909,811.84 and 357,473.98

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Solution

The fourth proportional to 659,279.98, 909,811.84 and 357,473.98 is: 493,317.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,279.98 : 909,811.84 = 357,473.98 : x
  2. Step 2: Convert to fraction form
    659,279.98/909,811.84 = 357,473.98/x
  3. Step 3: Cross multiply
    659,279.98x = 909,811.84 × 357,473.98
  4. Step 4: Simplify right side
    659,279.98x = 325,234,059,495.92
  5. Step 5: Solve for x
    x = 325,234,059,495.92/659,279.98
  6. Step 6: Final answer
    x = 493,317.06

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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.