Finding the Fourth Proportional to 1,248,299,097.42, 1,721,999,649.04 and 771,837,159.48
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Solution
The fourth proportional to 1,248,299,097.42, 1,721,999,649.04 and 771,837,159.48 is: 1,064,731,457.78
Step by Step Solution
- Step 1: Write the proportion equation
1,248,299,097.42 : 1,721,999,649.04 = 771,837,159.48 : x - Step 2: Convert to fraction form
1,248,299,097.42/1,721,999,649.04 = 771,837,159.48/x - Step 3: Cross multiply
1,248,299,097.42x = 1,721,999,649.04 × 771,837,159.48 - Step 4: Simplify right side
1,248,299,097.42x = 1,329,103,317,740,590,592 - Step 5: Solve for x
x = 1,329,103,317,740,590,592/1,248,299,097.42 - Step 6: Final answer
x = 1,064,731,457.78
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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.