Finding the Fourth Proportional to 680,245,053.08, 938,768,937.98 and 382,989,434.63
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Solution
The fourth proportional to 680,245,053.08, 938,768,937.98 and 382,989,434.63 is: 528,542,740.85
Step by Step Solution
- Step 1: Write the proportion equation
680,245,053.08 : 938,768,937.98 = 382,989,434.63 : x - Step 2: Convert to fraction form
680,245,053.08/938,768,937.98 = 382,989,434.63/x - Step 3: Cross multiply
680,245,053.08x = 938,768,937.98 × 382,989,434.63 - Step 4: Simplify right side
680,245,053.08x = 359,538,584,798,556,928 - Step 5: Solve for x
x = 359,538,584,798,556,928/680,245,053.08 - Step 6: Final answer
x = 528,542,740.85
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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.