Finding the Fourth Proportional to 1,023,381,911.39, 1,412,267,001.51 and 553,483,220.99
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Solution
The fourth proportional to 1,023,381,911.39, 1,412,267,001.51 and 553,483,220.99 is: 763,806,825.38
Step by Step Solution
- Step 1: Write the proportion equation
1,023,381,911.39 : 1,412,267,001.51 = 553,483,220.99 : x - Step 2: Convert to fraction form
1,023,381,911.39/1,412,267,001.51 = 553,483,220.99/x - Step 3: Cross multiply
1,023,381,911.39x = 1,412,267,001.51 × 553,483,220.99 - Step 4: Simplify right side
1,023,381,911.39x = 781,666,088,893,644,032 - Step 5: Solve for x
x = 781,666,088,893,644,032/1,023,381,911.39 - Step 6: Final answer
x = 763,806,825.38
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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.