Finding the Fourth Proportional to 972,220,431.68, 1,341,545,390.88 and 774,485,460.80
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Solution
The fourth proportional to 972,220,431.68, 1,341,545,390.88 and 774,485,460.80 is: 1,068,695,294.18
Step by Step Solution
- Step 1: Write the proportion equation
972,220,431.68 : 1,341,545,390.88 = 774,485,460.80 : x - Step 2: Convert to fraction form
972,220,431.68/1,341,545,390.88 = 774,485,460.80/x - Step 3: Cross multiply
972,220,431.68x = 1,341,545,390.88 × 774,485,460.80 - Step 4: Simplify right side
972,220,431.68x = 1,039,007,400,239,812,992 - Step 5: Solve for x
x = 1,039,007,400,239,812,992/972,220,431.68 - Step 6: Final answer
x = 1,068,695,294.18
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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.