Finding the Fourth Proportional to 839,812,101.80, 1,259,718,152.70 and 355,137,909.80
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Solution
The fourth proportional to 839,812,101.80, 1,259,718,152.70 and 355,137,909.80 is: 532,706,864.70
Step by Step Solution
- Step 1: Write the proportion equation
839,812,101.80 : 1,259,718,152.70 = 355,137,909.80 : x - Step 2: Convert to fraction form
839,812,101.80/1,259,718,152.70 = 355,137,909.80/x - Step 3: Cross multiply
839,812,101.80x = 1,259,718,152.70 × 355,137,909.80 - Step 4: Simplify right side
839,812,101.80x = 447,373,671,686,995,264 - Step 5: Solve for x
x = 447,373,671,686,995,264/839,812,101.80 - Step 6: Final answer
x = 532,706,864.70
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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.