Finding the Fourth Proportional to 1,236,711,907.08, 1,706,652,371.70 and 679,789,032.84
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Solution
The fourth proportional to 1,236,711,907.08, 1,706,652,371.70 and 679,789,032.84 is: 938,103,335.55
Step by Step Solution
- Step 1: Write the proportion equation
1,236,711,907.08 : 1,706,652,371.70 = 679,789,032.84 : x - Step 2: Convert to fraction form
1,236,711,907.08/1,706,652,371.70 = 679,789,032.84/x - Step 3: Cross multiply
1,236,711,907.08x = 1,706,652,371.70 × 679,789,032.84 - Step 4: Simplify right side
1,236,711,907.08x = 1,160,163,565,152,035,328 - Step 5: Solve for x
x = 1,160,163,565,152,035,328/1,236,711,907.08 - Step 6: Final answer
x = 938,103,335.55
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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.