Finding the Fourth Proportional to 912,969,972.36, 1,368,602,989.44 and 360,276,977.54
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Solution
The fourth proportional to 912,969,972.36, 1,368,602,989.44 and 360,276,977.54 is: 540,079,261.55
Step by Step Solution
- Step 1: Write the proportion equation
912,969,972.36 : 1,368,602,989.44 = 360,276,977.54 : x - Step 2: Convert to fraction form
912,969,972.36/1,368,602,989.44 = 360,276,977.54/x - Step 3: Cross multiply
912,969,972.36x = 1,368,602,989.44 × 360,276,977.54 - Step 4: Simplify right side
912,969,972.36x = 493,076,148,487,651,776 - Step 5: Solve for x
x = 493,076,148,487,651,776/912,969,972.36 - Step 6: Final answer
x = 540,079,261.55
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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.