Finding the Fourth Proportional to 961,803,568.12, 1,327,176,949.38 and 538,440,412.08
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Solution
The fourth proportional to 961,803,568.12, 1,327,176,949.38 and 538,440,412.08 is: 742,985,082.62
Step by Step Solution
- Step 1: Write the proportion equation
961,803,568.12 : 1,327,176,949.38 = 538,440,412.08 : x - Step 2: Convert to fraction form
961,803,568.12/1,327,176,949.38 = 538,440,412.08/x - Step 3: Cross multiply
961,803,568.12x = 1,327,176,949.38 × 538,440,412.08 - Step 4: Simplify right side
961,803,568.12x = 714,605,703,527,244,672 - Step 5: Solve for x
x = 714,605,703,527,244,672/961,803,568.12 - Step 6: Final answer
x = 742,985,082.62
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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.