Finding the Fourth Proportional to 1,382,788,715.92, 1,908,133,070.70 and 779,926,117.30
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Solution
The fourth proportional to 1,382,788,715.92, 1,908,133,070.70 and 779,926,117.30 is: 1,076,232,977.60
Step by Step Solution
- Step 1: Write the proportion equation
1,382,788,715.92 : 1,908,133,070.70 = 779,926,117.30 : x - Step 2: Convert to fraction form
1,382,788,715.92/1,908,133,070.70 = 779,926,117.30/x - Step 3: Cross multiply
1,382,788,715.92x = 1,908,133,070.70 × 779,926,117.30 - Step 4: Simplify right side
1,382,788,715.92x = 1,488,202,817,122,777,344 - Step 5: Solve for x
x = 1,488,202,817,122,777,344/1,382,788,715.92 - Step 6: Final answer
x = 1,076,232,977.60
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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.