Finding the Fourth Proportional to 472,392,430.80, 708,588,646.20 and 432,215,491.20
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Solution
The fourth proportional to 472,392,430.80, 708,588,646.20 and 432,215,491.20 is: 648,323,236.80
Step by Step Solution
- Step 1: Write the proportion equation
472,392,430.80 : 708,588,646.20 = 432,215,491.20 : x - Step 2: Convert to fraction form
472,392,430.80/708,588,646.20 = 432,215,491.20/x - Step 3: Cross multiply
472,392,430.80x = 708,588,646.20 × 432,215,491.20 - Step 4: Simplify right side
472,392,430.80x = 306,262,989,776,076,032 - Step 5: Solve for x
x = 306,262,989,776,076,032/472,392,430.80 - Step 6: Final answer
x = 648,323,236.80
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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.