Finding the Fourth Proportional to 1,679,179,136.42, 2,316,980,220.99 and 974,169,505.82
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Solution
The fourth proportional to 1,679,179,136.42, 2,316,980,220.99 and 974,169,505.82 is: 1,344,187,423.44
Step by Step Solution
- Step 1: Write the proportion equation
1,679,179,136.42 : 2,316,980,220.99 = 974,169,505.82 : x - Step 2: Convert to fraction form
1,679,179,136.42/2,316,980,220.99 = 974,169,505.82/x - Step 3: Cross multiply
1,679,179,136.42x = 2,316,980,220.99 × 974,169,505.82 - Step 4: Simplify right side
1,679,179,136.42x = 2,257,131,476,878,633,216 - Step 5: Solve for x
x = 2,257,131,476,878,633,216/1,679,179,136.42 - Step 6: Final answer
x = 1,344,187,423.44
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1.5x scale
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.