Finding the Fourth Proportional to 485,575,201.80, 728,362,802.70 and 434,556,865.80
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Solution
The fourth proportional to 485,575,201.80, 728,362,802.70 and 434,556,865.80 is: 651,835,298.70
Step by Step Solution
- Step 1: Write the proportion equation
485,575,201.80 : 728,362,802.70 = 434,556,865.80 : x - Step 2: Convert to fraction form
485,575,201.80/728,362,802.70 = 434,556,865.80/x - Step 3: Cross multiply
485,575,201.80x = 728,362,802.70 × 434,556,865.80 - Step 4: Simplify right side
485,575,201.80x = 316,515,056,706,615,808 - Step 5: Solve for x
x = 316,515,056,706,615,808/485,575,201.80 - Step 6: Final answer
x = 651,835,298.70
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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.