Finding the Fourth Proportional to 1,416,312,739.19, 1,954,513,462.84 and 781,218,988.40
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Solution
The fourth proportional to 1,416,312,739.19, 1,954,513,462.84 and 781,218,988.40 is: 1,078,083,242.50
Step by Step Solution
- Step 1: Write the proportion equation
1,416,312,739.19 : 1,954,513,462.84 = 781,218,988.40 : x - Step 2: Convert to fraction form
1,416,312,739.19/1,954,513,462.84 = 781,218,988.40/x - Step 3: Cross multiply
1,416,312,739.19x = 1,954,513,462.84 × 781,218,988.40 - Step 4: Simplify right side
1,416,312,739.19x = 1,526,903,030,256,979,200 - Step 5: Solve for x
x = 1,526,903,030,256,979,200/1,416,312,739.19 - Step 6: Final answer
x = 1,078,083,242.50
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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.