Finding the Fourth Proportional to 810,863,506.76, 1,118,948,542.74 and 458,418,425.48
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Solution
The fourth proportional to 810,863,506.76, 1,118,948,542.74 and 458,418,425.48 is: 632,593,062.68
Step by Step Solution
- Step 1: Write the proportion equation
810,863,506.76 : 1,118,948,542.74 = 458,418,425.48 : x - Step 2: Convert to fraction form
810,863,506.76/1,118,948,542.74 = 458,418,425.48/x - Step 3: Cross multiply
810,863,506.76x = 1,118,948,542.74 × 458,418,425.48 - Step 4: Simplify right side
810,863,506.76x = 512,946,629,156,011,328 - Step 5: Solve for x
x = 512,946,629,156,011,328/810,863,506.76 - Step 6: Final answer
x = 632,593,062.68
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Double scale
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1.5x scale
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.