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Finding the Fourth Proportional to 644,162,489.64, 967,698,268.10 and 382,018,978.10

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Solution

The fourth proportional to 644,162,489.64, 967,698,268.10 and 382,018,978.10 is: 573,891,074.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,162,489.64 : 967,698,268.10 = 382,018,978.10 : x
  2. Step 2: Convert to fraction form
    644,162,489.64/967,698,268.10 = 382,018,978.10/x
  3. Step 3: Cross multiply
    644,162,489.64x = 967,698,268.10 × 382,018,978.10
  4. Step 4: Simplify right side
    644,162,489.64x = 369,679,103,488,701,888
  5. Step 5: Solve for x
    x = 369,679,103,488,701,888/644,162,489.64
  6. Step 6: Final answer
    x = 573,891,074.74

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Double scale
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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.