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Finding the Fourth Proportional to 319,698,723.20, 479,548,084.80 and 319,698,723.20

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Solution

The fourth proportional to 319,698,723.20, 479,548,084.80 and 319,698,723.20 is: 479,548,084.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,698,723.20 : 479,548,084.80 = 319,698,723.20 : x
  2. Step 2: Convert to fraction form
    319,698,723.20/479,548,084.80 = 319,698,723.20/x
  3. Step 3: Cross multiply
    319,698,723.20x = 479,548,084.80 × 319,698,723.20
  4. Step 4: Simplify right side
    319,698,723.20x = 153,310,910,423,565,312
  5. Step 5: Solve for x
    x = 153,310,910,423,565,312/319,698,723.20
  6. Step 6: Final answer
    x = 479,548,084.80

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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.