Finding the Fourth Proportional to 781,067,970.19, 1,077,802,555.99 and 463,473,487.45
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Solution
The fourth proportional to 781,067,970.19, 1,077,802,555.99 and 463,473,487.45 is: 639,551,138.28
Step by Step Solution
- Step 1: Write the proportion equation
781,067,970.19 : 1,077,802,555.99 = 463,473,487.45 : x - Step 2: Convert to fraction form
781,067,970.19/1,077,802,555.99 = 463,473,487.45/x - Step 3: Cross multiply
781,067,970.19x = 1,077,802,555.99 × 463,473,487.45 - Step 4: Simplify right side
781,067,970.19x = 499,532,909,407,209,152 - Step 5: Solve for x
x = 499,532,909,407,209,152/781,067,970.19 - Step 6: Final answer
x = 639,551,138.28
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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.