Finding the Fourth Proportional to 1,312,800,747.06, 1,811,670,451.88 and 709,971,357.07
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Solution
The fourth proportional to 1,312,800,747.06, 1,811,670,451.88 and 709,971,357.07 is: 979,763,404.43
Step by Step Solution
- Step 1: Write the proportion equation
1,312,800,747.06 : 1,811,670,451.88 = 709,971,357.07 : x - Step 2: Convert to fraction form
1,312,800,747.06/1,811,670,451.88 = 709,971,357.07/x - Step 3: Cross multiply
1,312,800,747.06x = 1,811,670,451.88 × 709,971,357.07 - Step 4: Simplify right side
1,312,800,747.06x = 1,286,234,129,283,578,368 - Step 5: Solve for x
x = 1,286,234,129,283,578,368/1,312,800,747.06 - Step 6: Final answer
x = 979,763,404.43
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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.