Finding the Fourth Proportional to 753,988,897.80, 1,130,983,346.70 and 521,536,604.40
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Solution
The fourth proportional to 753,988,897.80, 1,130,983,346.70 and 521,536,604.40 is: 782,304,906.60
Step by Step Solution
- Step 1: Write the proportion equation
753,988,897.80 : 1,130,983,346.70 = 521,536,604.40 : x - Step 2: Convert to fraction form
753,988,897.80/1,130,983,346.70 = 521,536,604.40/x - Step 3: Cross multiply
753,988,897.80x = 1,130,983,346.70 × 521,536,604.40 - Step 4: Simplify right side
753,988,897.80x = 589,849,214,270,865,920 - Step 5: Solve for x
x = 589,849,214,270,865,920/753,988,897.80 - Step 6: Final answer
x = 782,304,906.60
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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.