Finding the Fourth Proportional to 518,168,365.87, 715,070,608.86 and 283,218,890.26
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Solution
The fourth proportional to 518,168,365.87, 715,070,608.86 and 283,218,890.26 is: 390,841,119.68
Step by Step Solution
- Step 1: Write the proportion equation
518,168,365.87 : 715,070,608.86 = 283,218,890.26 : x - Step 2: Convert to fraction form
518,168,365.87/715,070,608.86 = 283,218,890.26/x - Step 3: Cross multiply
518,168,365.87x = 715,070,608.86 × 283,218,890.26 - Step 4: Simplify right side
518,168,365.87x = 202,521,504,298,871,712 - Step 5: Solve for x
x = 202,521,504,298,871,712/518,168,365.87 - Step 6: Final answer
x = 390,841,119.68
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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.