Finding the Fourth Proportional to 1,306,386,909.70, 1,959,580,364.55 and 1,276,153,821.70
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Solution
The fourth proportional to 1,306,386,909.70, 1,959,580,364.55 and 1,276,153,821.70 is: 1,914,230,732.55
Step by Step Solution
- Step 1: Write the proportion equation
1,306,386,909.70 : 1,959,580,364.55 = 1,276,153,821.70 : x - Step 2: Convert to fraction form
1,306,386,909.70/1,959,580,364.55 = 1,276,153,821.70/x - Step 3: Cross multiply
1,306,386,909.70x = 1,959,580,364.55 × 1,276,153,821.70 - Step 4: Simplify right side
1,306,386,909.70x = 2,500,725,971,148,761,600 - Step 5: Solve for x
x = 2,500,725,971,148,761,600/1,306,386,909.70 - Step 6: Final answer
x = 1,914,230,732.55
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1.5x scale
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.