Finding the Fourth Proportional to 1,272,189,251.20, 1,908,301,502.40 and 838,267,715.20
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Solution
The fourth proportional to 1,272,189,251.20, 1,908,301,502.40 and 838,267,715.20 is: 1,257,413,186.62
Step by Step Solution
- Step 1: Write the proportion equation
1,272,189,251.20 : 1,908,301,502.40 = 838,267,715.20 : x - Step 2: Convert to fraction form
1,272,189,251.20/1,908,301,502.40 = 838,267,715.20/x - Step 3: Cross multiply
1,272,189,251.20x = 1,908,301,502.40 × 838,267,715.20 - Step 4: Simplify right side
1,272,189,251.20x = 1,599,667,540,329,575,424 - Step 5: Solve for x
x = 1,599,667,540,329,575,424/1,272,189,251.20 - Step 6: Final answer
x = 1,257,413,186.62
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.