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Finding the Fourth Proportional to 1,214,724,915.81, 1,676,322,000.42 and 657,808,923.33

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Solution

The fourth proportional to 1,214,724,915.81, 1,676,322,000.42 and 657,808,923.33 is: 907,777,189.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,724,915.81 : 1,676,322,000.42 = 657,808,923.33 : x
  2. Step 2: Convert to fraction form
    1,214,724,915.81/1,676,322,000.42 = 657,808,923.33/x
  3. Step 3: Cross multiply
    1,214,724,915.81x = 1,676,322,000.42 × 657,808,923.33
  4. Step 4: Simplify right side
    1,214,724,915.81x = 1,102,699,570,250,672,128
  5. Step 5: Solve for x
    x = 1,102,699,570,250,672,128/1,214,724,915.81
  6. Step 6: Final answer
    x = 907,777,189.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.