Finding the Fourth Proportional to 687,492,461.73, 948,762,513.68 and 386,130,880.79
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Solution
The fourth proportional to 687,492,461.73, 948,762,513.68 and 386,130,880.79 is: 532,873,486.55
Step by Step Solution
- Step 1: Write the proportion equation
687,492,461.73 : 948,762,513.68 = 386,130,880.79 : x - Step 2: Convert to fraction form
687,492,461.73/948,762,513.68 = 386,130,880.79/x - Step 3: Cross multiply
687,492,461.73x = 948,762,513.68 × 386,130,880.79 - Step 4: Simplify right side
687,492,461.73x = 366,346,505,061,118,336 - Step 5: Solve for x
x = 366,346,505,061,118,336/687,492,461.73 - Step 6: Final answer
x = 532,873,486.55
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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.