Finding the Fourth Proportional to 689,905,432.05, 1,034,858,148.08 and 689,905,432.05
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Solution
The fourth proportional to 689,905,432.05, 1,034,858,148.08 and 689,905,432.05 is: 1,034,858,148.08
Step by Step Solution
- Step 1: Write the proportion equation
689,905,432.05 : 1,034,858,148.08 = 689,905,432.05 : x - Step 2: Convert to fraction form
689,905,432.05/1,034,858,148.08 = 689,905,432.05/x - Step 3: Cross multiply
689,905,432.05x = 1,034,858,148.08 × 689,905,432.05 - Step 4: Simplify right side
689,905,432.05x = 713,954,257,758,145,792 - Step 5: Solve for x
x = 713,954,257,758,145,792/689,905,432.05 - Step 6: Final answer
x = 1,034,858,148.08
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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.