Finding the Fourth Proportional to 708,696,469.20, 1,063,044,703.80 and 640,672,021.20
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Solution
The fourth proportional to 708,696,469.20, 1,063,044,703.80 and 640,672,021.20 is: 961,008,031.80
Step by Step Solution
- Step 1: Write the proportion equation
708,696,469.20 : 1,063,044,703.80 = 640,672,021.20 : x - Step 2: Convert to fraction form
708,696,469.20/1,063,044,703.80 = 640,672,021.20/x - Step 3: Cross multiply
708,696,469.20x = 1,063,044,703.80 × 640,672,021.20 - Step 4: Simplify right side
708,696,469.20x = 681,062,999,009,501,312 - Step 5: Solve for x
x = 681,062,999,009,501,312/708,696,469.20 - Step 6: Final answer
x = 961,008,031.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.