Finding the Fourth Proportional to 538,273,208.12, 742,817,326.12 and 290,754,564.80
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Solution
The fourth proportional to 538,273,208.12, 742,817,326.12 and 290,754,564.80 is: 401,241,460.89
Step by Step Solution
- Step 1: Write the proportion equation
538,273,208.12 : 742,817,326.12 = 290,754,564.80 : x - Step 2: Convert to fraction form
538,273,208.12/742,817,326.12 = 290,754,564.80/x - Step 3: Cross multiply
538,273,208.12x = 742,817,326.12 × 290,754,564.80 - Step 4: Simplify right side
538,273,208.12x = 215,977,528,381,920,288 - Step 5: Solve for x
x = 215,977,528,381,920,288/538,273,208.12 - Step 6: Final answer
x = 401,241,460.89
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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.