Finding the Fourth Proportional to 646,988,569.80, 970,482,854.70 and 646,988,569.80
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Solution
The fourth proportional to 646,988,569.80, 970,482,854.70 and 646,988,569.80 is: 970,482,854.70
Step by Step Solution
- Step 1: Write the proportion equation
646,988,569.80 : 970,482,854.70 = 646,988,569.80 : x - Step 2: Convert to fraction form
646,988,569.80/970,482,854.70 = 646,988,569.80/x - Step 3: Cross multiply
646,988,569.80x = 970,482,854.70 × 646,988,569.80 - Step 4: Simplify right side
646,988,569.80x = 627,891,314,177,774,208 - Step 5: Solve for x
x = 627,891,314,177,774,208/646,988,569.80 - Step 6: Final answer
x = 970,482,854.70
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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.