Finding the Fourth Proportional to 1,020,020,701.70, 1,530,031,052.55 and 611,874,013.70
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Solution
The fourth proportional to 1,020,020,701.70, 1,530,031,052.55 and 611,874,013.70 is: 917,811,020.55
Step by Step Solution
- Step 1: Write the proportion equation
1,020,020,701.70 : 1,530,031,052.55 = 611,874,013.70 : x - Step 2: Convert to fraction form
1,020,020,701.70/1,530,031,052.55 = 611,874,013.70/x - Step 3: Cross multiply
1,020,020,701.70x = 1,530,031,052.55 × 611,874,013.70 - Step 4: Simplify right side
1,020,020,701.70x = 936,186,241,209,404,160 - Step 5: Solve for x
x = 936,186,241,209,404,160/1,020,020,701.70 - Step 6: Final answer
x = 917,811,020.55
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Double scale
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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.