Finding the Fourth Proportional to 1,010,943,998.90, 1,516,415,998.35 and 847,685,323.70
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Solution
The fourth proportional to 1,010,943,998.90, 1,516,415,998.35 and 847,685,323.70 is: 1,271,527,985.55
Step by Step Solution
- Step 1: Write the proportion equation
1,010,943,998.90 : 1,516,415,998.35 = 847,685,323.70 : x - Step 2: Convert to fraction form
1,010,943,998.90/1,516,415,998.35 = 847,685,323.70/x - Step 3: Cross multiply
1,010,943,998.90x = 1,516,415,998.35 × 847,685,323.70 - Step 4: Simplify right side
1,010,943,998.90x = 1,285,443,586,425,178,368 - Step 5: Solve for x
x = 1,285,443,586,425,178,368/1,010,943,998.90 - Step 6: Final answer
x = 1,271,527,985.55
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Double scale
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Similar ratio
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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.