Finding the Fourth Proportional to 1,247,646,896.48, 1,721,753,133.68 and 683,167,479.68
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Solution
The fourth proportional to 1,247,646,896.48, 1,721,753,133.68 and 683,167,479.68 is: 942,771,350.04
Step by Step Solution
- Step 1: Write the proportion equation
1,247,646,896.48 : 1,721,753,133.68 = 683,167,479.68 : x - Step 2: Convert to fraction form
1,247,646,896.48/1,721,753,133.68 = 683,167,479.68/x - Step 3: Cross multiply
1,247,646,896.48x = 1,721,753,133.68 × 683,167,479.68 - Step 4: Simplify right side
1,247,646,896.48x = 1,176,245,748,967,307,776 - Step 5: Solve for x
x = 1,176,245,748,967,307,776/1,247,646,896.48 - Step 6: Final answer
x = 942,771,350.04
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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.