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Finding the Fourth Proportional to 485,962,905.40, 728,944,358.10 and 122,457,261.40

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Solution

The fourth proportional to 485,962,905.40, 728,944,358.10 and 122,457,261.40 is: 183,685,892.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,962,905.40 : 728,944,358.10 = 122,457,261.40 : x
  2. Step 2: Convert to fraction form
    485,962,905.40/728,944,358.10 = 122,457,261.40/x
  3. Step 3: Cross multiply
    485,962,905.40x = 728,944,358.10 × 122,457,261.40
  4. Step 4: Simplify right side
    485,962,905.40x = 89,264,529,805,906,912
  5. Step 5: Solve for x
    x = 89,264,529,805,906,912/485,962,905.40
  6. Step 6: Final answer
    x = 183,685,892.10

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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.