Finding the Fourth Proportional to 1,167,799,789.10, 1,611,390,347.43 and 709,270,725.99
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Solution
The fourth proportional to 1,167,799,789.10, 1,611,390,347.43 and 709,270,725.99 is: 978,688,309.62
Step by Step Solution
- Step 1: Write the proportion equation
1,167,799,789.10 : 1,611,390,347.43 = 709,270,725.99 : x - Step 2: Convert to fraction form
1,167,799,789.10/1,611,390,347.43 = 709,270,725.99/x - Step 3: Cross multiply
1,167,799,789.10x = 1,611,390,347.43 × 709,270,725.99 - Step 4: Simplify right side
1,167,799,789.10x = 1,142,912,001,566,897,536 - Step 5: Solve for x
x = 1,142,912,001,566,897,536/1,167,799,789.10 - Step 6: Final answer
x = 978,688,309.62
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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.