Finding the Fourth Proportional to 817,299,208.40, 1,225,948,812.60 and 776,988,424.40
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Solution
The fourth proportional to 817,299,208.40, 1,225,948,812.60 and 776,988,424.40 is: 1,165,482,636.60
Step by Step Solution
- Step 1: Write the proportion equation
817,299,208.40 : 1,225,948,812.60 = 776,988,424.40 : x - Step 2: Convert to fraction form
817,299,208.40/1,225,948,812.60 = 776,988,424.40/x - Step 3: Cross multiply
817,299,208.40x = 1,225,948,812.60 × 776,988,424.40 - Step 4: Simplify right side
817,299,208.40x = 952,548,036,297,124,736 - Step 5: Solve for x
x = 952,548,036,297,124,736/817,299,208.40 - Step 6: Final answer
x = 1,165,482,636.60
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.