Finding the Fourth Proportional to 1,215,998,683,817.10, 1,678,126,564,980.80 and 667,309,624,236.55
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Solution
The fourth proportional to 1,215,998,683,817.10, 1,678,126,564,980.80 and 667,309,624,236.55 is: 920,913,831,899.46
Step by Step Solution
- Step 1: Write the proportion equation
1,215,998,683,817.10 : 1,678,126,564,980.80 = 667,309,624,236.55 : x - Step 2: Convert to fraction form
1,215,998,683,817.10/1,678,126,564,980.80 = 667,309,624,236.55/x - Step 3: Cross multiply
1,215,998,683,817.10x = 1,678,126,564,980.80 × 667,309,624,236.55 - Step 4: Simplify right side
1,215,998,683,817.10x = 1,119,830,007,498,710,177,546,240 - Step 5: Solve for x
x = 1,119,830,007,498,710,177,546,240/1,215,998,683,817.10 - Step 6: Final answer
x = 920,913,831,899.46
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.