Finding the Fourth Proportional to 776,431,948.68, 1,164,658,219.74 and 258,862,555.08
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Solution
The fourth proportional to 776,431,948.68, 1,164,658,219.74 and 258,862,555.08 is: 388,297,265.55
Step by Step Solution
- Step 1: Write the proportion equation
776,431,948.68 : 1,164,658,219.74 = 258,862,555.08 : x - Step 2: Convert to fraction form
776,431,948.68/1,164,658,219.74 = 258,862,555.08/x - Step 3: Cross multiply
776,431,948.68x = 1,164,658,219.74 × 258,862,555.08 - Step 4: Simplify right side
776,431,948.68x = 301,486,402,556,820,480 - Step 5: Solve for x
x = 301,486,402,556,820,480/776,431,948.68 - Step 6: Final answer
x = 388,297,265.55
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1.5x scale
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.