Finding the Fourth Proportional to 970,220,878.40, 1,455,331,317.60 and 740,638,366.40
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Solution
The fourth proportional to 970,220,878.40, 1,455,331,317.60 and 740,638,366.40 is: 1,110,957,549.60
Step by Step Solution
- Step 1: Write the proportion equation
970,220,878.40 : 1,455,331,317.60 = 740,638,366.40 : x - Step 2: Convert to fraction form
970,220,878.40/1,455,331,317.60 = 740,638,366.40/x - Step 3: Cross multiply
970,220,878.40x = 1,455,331,317.60 × 740,638,366.40 - Step 4: Simplify right side
970,220,878.40x = 1,077,874,209,638,023,424 - Step 5: Solve for x
x = 1,077,874,209,638,023,424/970,220,878.40 - Step 6: Final answer
x = 1,110,957,549.60
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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.