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Finding the Fourth Proportional to 664,299,519.60, 996,449,279.40 and 319,169,924.40

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Solution

The fourth proportional to 664,299,519.60, 996,449,279.40 and 319,169,924.40 is: 478,754,886.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,299,519.60 : 996,449,279.40 = 319,169,924.40 : x
  2. Step 2: Convert to fraction form
    664,299,519.60/996,449,279.40 = 319,169,924.40/x
  3. Step 3: Cross multiply
    664,299,519.60x = 996,449,279.40 × 319,169,924.40
  4. Step 4: Simplify right side
    664,299,519.60x = 318,036,641,174,532,416
  5. Step 5: Solve for x
    x = 318,036,641,174,532,416/664,299,519.60
  6. Step 6: Final answer
    x = 478,754,886.60

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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.