Finding the Fourth Proportional to 687,386,754.78, 948,593,668.98 and 374,123,214.84
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Solution
The fourth proportional to 687,386,754.78, 948,593,668.98 and 374,123,214.84 is: 516,290,007.84
Step by Step Solution
- Step 1: Write the proportion equation
687,386,754.78 : 948,593,668.98 = 374,123,214.84 : x - Step 2: Convert to fraction form
687,386,754.78/948,593,668.98 = 374,123,214.84/x - Step 3: Cross multiply
687,386,754.78x = 948,593,668.98 × 374,123,214.84 - Step 4: Simplify right side
687,386,754.78x = 354,890,913,015,668,352 - Step 5: Solve for x
x = 354,890,913,015,668,352/687,386,754.78 - Step 6: Final answer
x = 516,290,007.84
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1.5x scale
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.