Finding the Fourth Proportional to 1,378,604,159.99, 1,902,213,547.27 and 821,739,022.55
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Solution
The fourth proportional to 1,378,604,159.99, 1,902,213,547.27 and 821,739,022.55 is: 1,133,844,758.62
Step by Step Solution
- Step 1: Write the proportion equation
1,378,604,159.99 : 1,902,213,547.27 = 821,739,022.55 : x - Step 2: Convert to fraction form
1,378,604,159.99/1,902,213,547.27 = 821,739,022.55/x - Step 3: Cross multiply
1,378,604,159.99x = 1,902,213,547.27 × 821,739,022.55 - Step 4: Simplify right side
1,378,604,159.99x = 1,563,123,101,021,276,416 - Step 5: Solve for x
x = 1,563,123,101,021,276,416/1,378,604,159.99 - Step 6: Final answer
x = 1,133,844,758.62
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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.