Finding the Fourth Proportional to 476,492,448.12, 657,457,579.35 and 278,163,938.40
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Solution
The fourth proportional to 476,492,448.12, 657,457,579.35 and 278,163,938.40 is: 383,806,690.59
Step by Step Solution
- Step 1: Write the proportion equation
476,492,448.12 : 657,457,579.35 = 278,163,938.40 : x - Step 2: Convert to fraction form
476,492,448.12/657,457,579.35 = 278,163,938.40/x - Step 3: Cross multiply
476,492,448.12x = 657,457,579.35 × 278,163,938.40 - Step 4: Simplify right side
476,492,448.12x = 182,880,989,602,926,496 - Step 5: Solve for x
x = 182,880,989,602,926,496/476,492,448.12 - Step 6: Final answer
x = 383,806,690.59
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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.