Finding the Fourth Proportional to 805,143,186.88, 1,207,415,746.29 and 280,377,528.70
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Solution
The fourth proportional to 805,143,186.88, 1,207,415,746.29 and 280,377,528.70 is: 420,462,159.50
Step by Step Solution
- Step 1: Write the proportion equation
805,143,186.88 : 1,207,415,746.29 = 280,377,528.70 : x - Step 2: Convert to fraction form
805,143,186.88/1,207,415,746.29 = 280,377,528.70/x - Step 3: Cross multiply
805,143,186.88x = 1,207,415,746.29 × 280,377,528.70 - Step 4: Simplify right side
805,143,186.88x = 338,532,243,058,256,384 - Step 5: Solve for x
x = 338,532,243,058,256,384/805,143,186.88 - Step 6: Final answer
x = 420,462,159.50
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.