Finding the Fourth Proportional to 1,556,815,237.80, 2,335,222,856.70 and 521,331,973.80
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Solution
The fourth proportional to 1,556,815,237.80, 2,335,222,856.70 and 521,331,973.80 is: 781,997,960.70
Step by Step Solution
- Step 1: Write the proportion equation
1,556,815,237.80 : 2,335,222,856.70 = 521,331,973.80 : x - Step 2: Convert to fraction form
1,556,815,237.80/2,335,222,856.70 = 521,331,973.80/x - Step 3: Cross multiply
1,556,815,237.80x = 2,335,222,856.70 × 521,331,973.80 - Step 4: Simplify right side
1,556,815,237.80x = 1,217,426,341,146,285,568 - Step 5: Solve for x
x = 1,217,426,341,146,285,568/1,556,815,237.80 - Step 6: Final answer
x = 781,997,960.70
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1.5x scale
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.