Finding the Fourth Proportional to 718,697,506.84, 991,805,547.36 and 388,672,645.84
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Solution
The fourth proportional to 718,697,506.84, 991,805,547.36 and 388,672,645.84 is: 536,369,867.13
Step by Step Solution
- Step 1: Write the proportion equation
718,697,506.84 : 991,805,547.36 = 388,672,645.84 : x - Step 2: Convert to fraction form
718,697,506.84/991,805,547.36 = 388,672,645.84/x - Step 3: Cross multiply
718,697,506.84x = 991,805,547.36 × 388,672,645.84 - Step 4: Simplify right side
718,697,506.84x = 385,487,686,251,200,576 - Step 5: Solve for x
x = 385,487,686,251,200,576/718,697,506.84 - Step 6: Final answer
x = 536,369,867.13
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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.