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Finding the Fourth Proportional to 978,392,005.60, 1,467,588,008.40 and 332,159,749.60

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Solution

The fourth proportional to 978,392,005.60, 1,467,588,008.40 and 332,159,749.60 is: 498,239,624.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,392,005.60 : 1,467,588,008.40 = 332,159,749.60 : x
  2. Step 2: Convert to fraction form
    978,392,005.60/1,467,588,008.40 = 332,159,749.60/x
  3. Step 3: Cross multiply
    978,392,005.60x = 1,467,588,008.40 × 332,159,749.60
  4. Step 4: Simplify right side
    978,392,005.60x = 487,473,665,386,106,752
  5. Step 5: Solve for x
    x = 487,473,665,386,106,752/978,392,005.60
  6. Step 6: Final answer
    x = 498,239,624.40

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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.