Finding the Fourth Proportional to 472,403,905.10, 708,605,857.65 and 149,287,777.10
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Solution
The fourth proportional to 472,403,905.10, 708,605,857.65 and 149,287,777.10 is: 223,931,665.65
Step by Step Solution
- Step 1: Write the proportion equation
472,403,905.10 : 708,605,857.65 = 149,287,777.10 : x - Step 2: Convert to fraction form
472,403,905.10/708,605,857.65 = 149,287,777.10/x - Step 3: Cross multiply
472,403,905.10x = 708,605,857.65 × 149,287,777.10 - Step 4: Simplify right side
472,403,905.10x = 105,786,193,328,607,520 - Step 5: Solve for x
x = 105,786,193,328,607,520/472,403,905.10 - Step 6: Final answer
x = 223,931,665.65
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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.