Finding the Fourth Proportional to 1,490,751,212.70, 2,236,126,819.05 and 509,285,973.90
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Solution
The fourth proportional to 1,490,751,212.70, 2,236,126,819.05 and 509,285,973.90 is: 763,928,960.85
Step by Step Solution
- Step 1: Write the proportion equation
1,490,751,212.70 : 2,236,126,819.05 = 509,285,973.90 : x - Step 2: Convert to fraction form
1,490,751,212.70/2,236,126,819.05 = 509,285,973.90/x - Step 3: Cross multiply
1,490,751,212.70x = 2,236,126,819.05 × 509,285,973.90 - Step 4: Simplify right side
1,490,751,212.70x = 1,138,828,024,803,788,416 - Step 5: Solve for x
x = 1,138,828,024,803,788,416/1,490,751,212.70 - Step 6: Final answer
x = 763,928,960.85
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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.