Finding the Fourth Proportional to 1,027,911,994.74, 1,418,535,803.49 and 558,013,315.53
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Solution
The fourth proportional to 1,027,911,994.74, 1,418,535,803.49 and 558,013,315.53 is: 770,067,740.19
Step by Step Solution
- Step 1: Write the proportion equation
1,027,911,994.74 : 1,418,535,803.49 = 558,013,315.53 : x - Step 2: Convert to fraction form
1,027,911,994.74/1,418,535,803.49 = 558,013,315.53/x - Step 3: Cross multiply
1,027,911,994.74x = 1,418,535,803.49 × 558,013,315.53 - Step 4: Simplify right side
1,027,911,994.74x = 791,561,866,903,467,392 - Step 5: Solve for x
x = 791,561,866,903,467,392/1,027,911,994.74 - Step 6: Final answer
x = 770,067,740.19
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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.