Finding the Fourth Proportional to 783,045,219.63, 1,080,630,815.36 and 448,582,383.57
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Solution
The fourth proportional to 783,045,219.63, 1,080,630,815.36 and 448,582,383.57 is: 619,059,965.83
Step by Step Solution
- Step 1: Write the proportion equation
783,045,219.63 : 1,080,630,815.36 = 448,582,383.57 : x - Step 2: Convert to fraction form
783,045,219.63/1,080,630,815.36 = 448,582,383.57/x - Step 3: Cross multiply
783,045,219.63x = 1,080,630,815.36 × 448,582,383.57 - Step 4: Simplify right side
783,045,219.63x = 484,751,946,911,138,432 - Step 5: Solve for x
x = 484,751,946,911,138,432/783,045,219.63 - Step 6: Final answer
x = 619,059,965.83
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.