Finding the Fourth Proportional to 1,240,992,858.30, 1,712,556,214.17 and 676,465,379.70
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Solution
The fourth proportional to 1,240,992,858.30, 1,712,556,214.17 and 676,465,379.70 is: 933,514,630.59
Step by Step Solution
- Step 1: Write the proportion equation
1,240,992,858.30 : 1,712,556,214.17 = 676,465,379.70 : x - Step 2: Convert to fraction form
1,240,992,858.30/1,712,556,214.17 = 676,465,379.70/x - Step 3: Cross multiply
1,240,992,858.30x = 1,712,556,214.17 × 676,465,379.70 - Step 4: Simplify right side
1,240,992,858.30x = 1,158,484,989,676,103,680 - Step 5: Solve for x
x = 1,158,484,989,676,103,680/1,240,992,858.30 - Step 6: Final answer
x = 933,514,630.59
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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.