Finding the Fourth Proportional to 1,319,772,124.80, 1,980,933,645.60 and 803,211,472.80
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Solution
The fourth proportional to 1,319,772,124.80, 1,980,933,645.60 and 803,211,472.80 is: 1,205,593,451.40
Step by Step Solution
- Step 1: Write the proportion equation
1,319,772,124.80 : 1,980,933,645.60 = 803,211,472.80 : x - Step 2: Convert to fraction form
1,319,772,124.80/1,980,933,645.60 = 803,211,472.80/x - Step 3: Cross multiply
1,319,772,124.80x = 1,980,933,645.60 × 803,211,472.80 - Step 4: Simplify right side
1,319,772,124.80x = 1,591,108,631,001,448,960 - Step 5: Solve for x
x = 1,591,108,631,001,448,960/1,319,772,124.80 - Step 6: Final answer
x = 1,205,593,451.40
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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.