Finding the Fourth Proportional to 961,803,561.99, 1,327,176,940.93 and 538,440,405.96
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Solution
The fourth proportional to 961,803,561.99, 1,327,176,940.93 and 538,440,405.96 is: 742,985,074.18
Step by Step Solution
- Step 1: Write the proportion equation
961,803,561.99 : 1,327,176,940.93 = 538,440,405.96 : x - Step 2: Convert to fraction form
961,803,561.99/1,327,176,940.93 = 538,440,405.96/x - Step 3: Cross multiply
961,803,561.99x = 1,327,176,940.93 × 538,440,405.96 - Step 4: Simplify right side
961,803,561.99x = 714,605,690,853,754,112 - Step 5: Solve for x
x = 714,605,690,853,754,112/961,803,561.99 - Step 6: Final answer
x = 742,985,074.18
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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.