Finding the Fourth Proportional to 1,247,283,058.14, 1,721,132,878.50 and 745,391,921.94
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Solution
The fourth proportional to 1,247,283,058.14, 1,721,132,878.50 and 745,391,921.94 is: 1,028,570,488.35
Step by Step Solution
- Step 1: Write the proportion equation
1,247,283,058.14 : 1,721,132,878.50 = 745,391,921.94 : x - Step 2: Convert to fraction form
1,247,283,058.14/1,721,132,878.50 = 745,391,921.94/x - Step 3: Cross multiply
1,247,283,058.14x = 1,721,132,878.50 × 745,391,921.94 - Step 4: Simplify right side
1,247,283,058.14x = 1,282,918,544,219,239,680 - Step 5: Solve for x
x = 1,282,918,544,219,239,680/1,247,283,058.14 - Step 6: Final answer
x = 1,028,570,488.35
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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.