Finding the Fourth Proportional to 684,288,147.20, 1,026,432,220.80 and 670,683,257.60
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Solution
The fourth proportional to 684,288,147.20, 1,026,432,220.80 and 670,683,257.60 is: 1,006,024,886.40
Step by Step Solution
- Step 1: Write the proportion equation
684,288,147.20 : 1,026,432,220.80 = 670,683,257.60 : x - Step 2: Convert to fraction form
684,288,147.20/1,026,432,220.80 = 670,683,257.60/x - Step 3: Cross multiply
684,288,147.20x = 1,026,432,220.80 × 670,683,257.60 - Step 4: Simplify right side
684,288,147.20x = 688,410,905,551,746,432 - Step 5: Solve for x
x = 688,410,905,551,746,432/684,288,147.20 - Step 6: Final answer
x = 1,006,024,886.40
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Similar ratio
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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.