Finding the Fourth Proportional to 665,126,461.68, 917,442,026.02 and 426,593,825.51
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Solution
The fourth proportional to 665,126,461.68, 917,442,026.02 and 426,593,825.51 is: 588,422,091.30
Step by Step Solution
- Step 1: Write the proportion equation
665,126,461.68 : 917,442,026.02 = 426,593,825.51 : x - Step 2: Convert to fraction form
665,126,461.68/917,442,026.02 = 426,593,825.51/x - Step 3: Cross multiply
665,126,461.68x = 917,442,026.02 × 426,593,825.51 - Step 4: Simplify right side
665,126,461.68x = 391,375,103,557,361,984 - Step 5: Solve for x
x = 391,375,103,557,361,984/665,126,461.68 - Step 6: Final answer
x = 588,422,091.30
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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.