Finding the Fourth Proportional to 1,249,690,013.84, 1,724,587,932.84 and 721,163,672.48
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Solution
The fourth proportional to 1,249,690,013.84, 1,724,587,932.84 and 721,163,672.48 is: 995,214,936.01
Step by Step Solution
- Step 1: Write the proportion equation
1,249,690,013.84 : 1,724,587,932.84 = 721,163,672.48 : x - Step 2: Convert to fraction form
1,249,690,013.84/1,724,587,932.84 = 721,163,672.48/x - Step 3: Cross multiply
1,249,690,013.84x = 1,724,587,932.84 × 721,163,672.48 - Step 4: Simplify right side
1,249,690,013.84x = 1,243,710,167,161,585,920 - Step 5: Solve for x
x = 1,243,710,167,161,585,920/1,249,690,013.84 - Step 6: Final answer
x = 995,214,936.01
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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.