Finding the Fourth Proportional to 1,565,965.17, 2,160,929.64 and 921,260.79
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Solution
The fourth proportional to 1,565,965.17, 2,160,929.64 and 921,260.79 is: 1,271,279.71
Step by Step Solution
- Step 1: Write the proportion equation
1,565,965.17 : 2,160,929.64 = 921,260.79 : x - Step 2: Convert to fraction form
1,565,965.17/2,160,929.64 = 921,260.79/x - Step 3: Cross multiply
1,565,965.17x = 2,160,929.64 × 921,260.79 - Step 4: Simplify right side
1,565,965.17x = 1,990,779,747,280.82 - Step 5: Solve for x
x = 1,990,779,747,280.82/1,565,965.17 - Step 6: Final answer
x = 1,271,279.71
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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.