Finding the Fourth Proportional to 851,011,861.66, 1,274,730,134.81 and 539,959,367.13
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Solution
The fourth proportional to 851,011,861.66, 1,274,730,134.81 and 539,959,367.13 is: 808,804,797.99
Step by Step Solution
- Step 1: Write the proportion equation
851,011,861.66 : 1,274,730,134.81 = 539,959,367.13 : x - Step 2: Convert to fraction form
851,011,861.66/1,274,730,134.81 = 539,959,367.13/x - Step 3: Cross multiply
851,011,861.66x = 1,274,730,134.81 × 539,959,367.13 - Step 4: Simplify right side
851,011,861.66x = 688,302,476,853,547,136 - Step 5: Solve for x
x = 688,302,476,853,547,136/851,011,861.66 - Step 6: Final answer
x = 808,804,797.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.