Finding the Fourth Proportional to 431,569,282.60, 646,928,771.10 and 213,253,319.80
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Solution
The fourth proportional to 431,569,282.60, 646,928,771.10 and 213,253,319.80 is: 319,669,896.99
Step by Step Solution
- Step 1: Write the proportion equation
431,569,282.60 : 646,928,771.10 = 213,253,319.80 : x - Step 2: Convert to fraction form
431,569,282.60/646,928,771.10 = 213,253,319.80/x - Step 3: Cross multiply
431,569,282.60x = 646,928,771.10 × 213,253,319.80 - Step 4: Simplify right side
431,569,282.60x = 137,959,708,111,209,312 - Step 5: Solve for x
x = 137,959,708,111,209,312/431,569,282.60 - Step 6: Final answer
x = 319,669,896.99
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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.