Finding the Fourth Proportional to 671,330,221.80, 1,006,995,332.70 and 489,931,693.80
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Solution
The fourth proportional to 671,330,221.80, 1,006,995,332.70 and 489,931,693.80 is: 734,897,540.70
Step by Step Solution
- Step 1: Write the proportion equation
671,330,221.80 : 1,006,995,332.70 = 489,931,693.80 : x - Step 2: Convert to fraction form
671,330,221.80/1,006,995,332.70 = 489,931,693.80/x - Step 3: Cross multiply
671,330,221.80x = 1,006,995,332.70 × 489,931,693.80 - Step 4: Simplify right side
671,330,221.80x = 493,358,928,998,405,568 - Step 5: Solve for x
x = 493,358,928,998,405,568/671,330,221.80 - Step 6: Final answer
x = 734,897,540.70
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Double scale
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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.