Finding the Fourth Proportional to 1,246,875,543.68, 1,720,687,127.25 and 703,830,817.07
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Solution
The fourth proportional to 1,246,875,543.68, 1,720,687,127.25 and 703,830,817.07 is: 971,285,893.63
Step by Step Solution
- Step 1: Write the proportion equation
1,246,875,543.68 : 1,720,687,127.25 = 703,830,817.07 : x - Step 2: Convert to fraction form
1,246,875,543.68/1,720,687,127.25 = 703,830,817.07/x - Step 3: Cross multiply
1,246,875,543.68x = 1,720,687,127.25 × 703,830,817.07 - Step 4: Simplify right side
1,246,875,543.68x = 1,211,072,626,685,595,136 - Step 5: Solve for x
x = 1,211,072,626,685,595,136/1,246,875,543.68 - Step 6: Final answer
x = 971,285,893.63
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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.