Finding the Fourth Proportional to 709,850,534.79, 979,575,690.99 and 396,587,101.44
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Solution
The fourth proportional to 709,850,534.79, 979,575,690.99 and 396,587,101.44 is: 547,280,117.28
Step by Step Solution
- Step 1: Write the proportion equation
709,850,534.79 : 979,575,690.99 = 396,587,101.44 : x - Step 2: Convert to fraction form
709,850,534.79/979,575,690.99 = 396,587,101.44/x - Step 3: Cross multiply
709,850,534.79x = 979,575,690.99 × 396,587,101.44 - Step 4: Simplify right side
709,850,534.79x = 388,487,083,930,809,216 - Step 5: Solve for x
x = 388,487,083,930,809,216/709,850,534.79 - Step 6: Final answer
x = 547,280,117.28
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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.