Finding the Fourth Proportional to 1,661,645,362.68, 2,293,125,294.20 and 908,941,313.02
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Solution
The fourth proportional to 1,661,645,362.68, 2,293,125,294.20 and 908,941,313.02 is: 1,254,368,930.12
Step by Step Solution
- Step 1: Write the proportion equation
1,661,645,362.68 : 2,293,125,294.20 = 908,941,313.02 : x - Step 2: Convert to fraction form
1,661,645,362.68/2,293,125,294.20 = 908,941,313.02/x - Step 3: Cross multiply
1,661,645,362.68x = 2,293,125,294.20 × 908,941,313.02 - Step 4: Simplify right side
1,661,645,362.68x = 2,084,316,315,829,521,664 - Step 5: Solve for x
x = 2,084,316,315,829,521,664/1,661,645,362.68 - Step 6: Final answer
x = 1,254,368,930.12
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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.