Finding the Fourth Proportional to 814,120,411.06, 1,221,316,825.99 and 639,236,390.28
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Solution
The fourth proportional to 814,120,411.06, 1,221,316,825.99 and 639,236,390.28 is: 958,961,535.21
Step by Step Solution
- Step 1: Write the proportion equation
814,120,411.06 : 1,221,316,825.99 = 639,236,390.28 : x - Step 2: Convert to fraction form
814,120,411.06/1,221,316,825.99 = 639,236,390.28/x - Step 3: Cross multiply
814,120,411.06x = 1,221,316,825.99 × 639,236,390.28 - Step 4: Simplify right side
814,120,411.06x = 780,710,159,234,074,496 - Step 5: Solve for x
x = 780,710,159,234,074,496/814,120,411.06 - Step 6: Final answer
x = 958,961,535.21
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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.