Finding the Fourth Proportional to 1,246,875,547.94, 1,720,687,133.12 and 703,830,821.32
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Solution
The fourth proportional to 1,246,875,547.94, 1,720,687,133.12 and 703,830,821.32 is: 971,285,899.49
Step by Step Solution
- Step 1: Write the proportion equation
1,246,875,547.94 : 1,720,687,133.12 = 703,830,821.32 : x - Step 2: Convert to fraction form
1,246,875,547.94/1,720,687,133.12 = 703,830,821.32/x - Step 3: Cross multiply
1,246,875,547.94x = 1,720,687,133.12 × 703,830,821.32 - Step 4: Simplify right side
1,246,875,547.94x = 1,211,072,638,138,605,824 - Step 5: Solve for x
x = 1,211,072,638,138,605,824/1,246,875,547.94 - Step 6: Final answer
x = 971,285,899.49
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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.