Finding the Fourth Proportional to 1,276,996,209.06, 1,914,575,003.68 and 784,692,351.12
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Solution
The fourth proportional to 1,276,996,209.06, 1,914,575,003.68 and 784,692,351.12 is: 1,176,473,626.45
Step by Step Solution
- Step 1: Write the proportion equation
1,276,996,209.06 : 1,914,575,003.68 = 784,692,351.12 : x - Step 2: Convert to fraction form
1,276,996,209.06/1,914,575,003.68 = 784,692,351.12/x - Step 3: Cross multiply
1,276,996,209.06x = 1,914,575,003.68 × 784,692,351.12 - Step 4: Simplify right side
1,276,996,209.06x = 1,502,352,361,033,241,856 - Step 5: Solve for x
x = 1,502,352,361,033,241,856/1,276,996,209.06 - Step 6: Final answer
x = 1,176,473,626.45
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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.