Home / 1,215,179,870.50-1,677,217,996.72-738,769,008.30

Finding the Fourth Proportional to 1,215,179,870.50, 1,677,217,996.72 and 738,769,008.30

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Solution

The fourth proportional to 1,215,179,870.50, 1,677,217,996.72 and 738,769,008.30 is: 1,019,665,241.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,179,870.50 : 1,677,217,996.72 = 738,769,008.30 : x
  2. Step 2: Convert to fraction form
    1,215,179,870.50/1,677,217,996.72 = 738,769,008.30/x
  3. Step 3: Cross multiply
    1,215,179,870.50x = 1,677,217,996.72 × 738,769,008.30
  4. Step 4: Simplify right side
    1,215,179,870.50x = 1,239,076,676,139,747,072
  5. Step 5: Solve for x
    x = 1,239,076,676,139,747,072/1,215,179,870.50
  6. Step 6: Final answer
    x = 1,019,665,241.52

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Double scale
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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.