Finding the Fourth Proportional to 1,425,623,263.90, 1,967,324,988.90 and 790,540,246.42
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Solution
The fourth proportional to 1,425,623,263.90, 1,967,324,988.90 and 790,540,246.42 is: 1,090,926,067.84
Step by Step Solution
- Step 1: Write the proportion equation
1,425,623,263.90 : 1,967,324,988.90 = 790,540,246.42 : x - Step 2: Convert to fraction form
1,425,623,263.90/1,967,324,988.90 = 790,540,246.42/x - Step 3: Cross multiply
1,425,623,263.90x = 1,967,324,988.90 × 790,540,246.42 - Step 4: Simplify right side
1,425,623,263.90x = 1,555,249,581,513,229,824 - Step 5: Solve for x
x = 1,555,249,581,513,229,824/1,425,623,263.90 - Step 6: Final answer
x = 1,090,926,067.84
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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.