Finding the Fourth Proportional to 909,936,486.68, 1,255,709,614.84 and 492,248,656.40
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Solution
The fourth proportional to 909,936,486.68, 1,255,709,614.84 and 492,248,656.40 is: 679,301,665.32
Step by Step Solution
- Step 1: Write the proportion equation
909,936,486.68 : 1,255,709,614.84 = 492,248,656.40 : x - Step 2: Convert to fraction form
909,936,486.68/1,255,709,614.84 = 492,248,656.40/x - Step 3: Cross multiply
909,936,486.68x = 1,255,709,614.84 × 492,248,656.40 - Step 4: Simplify right side
909,936,486.68x = 618,121,370,735,460,224 - Step 5: Solve for x
x = 618,121,370,735,460,224/909,936,486.68 - Step 6: Final answer
x = 679,301,665.32
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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.