Finding the Fourth Proportional to 871,087,349.76, 1,306,822,348.80 and 257,623,749.60
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Solution
The fourth proportional to 871,087,349.76, 1,306,822,348.80 and 257,623,749.60 is: 386,492,208.45
Step by Step Solution
- Step 1: Write the proportion equation
871,087,349.76 : 1,306,822,348.80 = 257,623,749.60 : x - Step 2: Convert to fraction form
871,087,349.76/1,306,822,348.80 = 257,623,749.60/x - Step 3: Cross multiply
871,087,349.76x = 1,306,822,348.80 × 257,623,749.60 - Step 4: Simplify right side
871,087,349.76x = 336,668,473,558,935,040 - Step 5: Solve for x
x = 336,668,473,558,935,040/871,087,349.76 - Step 6: Final answer
x = 386,492,208.45
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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.