Finding the Fourth Proportional to 485,575,237.80, 728,362,856.70 and 434,556,901.80
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Solution
The fourth proportional to 485,575,237.80, 728,362,856.70 and 434,556,901.80 is: 651,835,352.70
Step by Step Solution
- Step 1: Write the proportion equation
485,575,237.80 : 728,362,856.70 = 434,556,901.80 : x - Step 2: Convert to fraction form
485,575,237.80/728,362,856.70 = 434,556,901.80/x - Step 3: Cross multiply
485,575,237.80x = 728,362,856.70 × 434,556,901.80 - Step 4: Simplify right side
485,575,237.80x = 316,515,106,393,749,376 - Step 5: Solve for x
x = 316,515,106,393,749,376/485,575,237.80 - Step 6: Final answer
x = 651,835,352.70
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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.