Finding the Fourth Proportional to 1,265,867,988.14, 1,746,897,823.65 and 708,951,035.21
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Solution
The fourth proportional to 1,265,867,988.14, 1,746,897,823.65 and 708,951,035.21 is: 978,352,428.60
Step by Step Solution
- Step 1: Write the proportion equation
1,265,867,988.14 : 1,746,897,823.65 = 708,951,035.21 : x - Step 2: Convert to fraction form
1,265,867,988.14/1,746,897,823.65 = 708,951,035.21/x - Step 3: Cross multiply
1,265,867,988.14x = 1,746,897,823.65 × 708,951,035.21 - Step 4: Simplify right side
1,265,867,988.14x = 1,238,465,020,474,029,056 - Step 5: Solve for x
x = 1,238,465,020,474,029,056/1,265,867,988.14 - Step 6: Final answer
x = 978,352,428.60
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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.