Finding the Fourth Proportional to 646,985.70, 970,478.55 and 292,691.70
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Solution
The fourth proportional to 646,985.70, 970,478.55 and 292,691.70 is: 439,037.55
Step by Step Solution
- Step 1: Write the proportion equation
646,985.70 : 970,478.55 = 292,691.70 : x - Step 2: Convert to fraction form
646,985.70/970,478.55 = 292,691.70/x - Step 3: Cross multiply
646,985.70x = 970,478.55 × 292,691.70 - Step 4: Simplify right side
646,985.70x = 284,051,016,613.04 - Step 5: Solve for x
x = 284,051,016,613.04/646,985.70 - Step 6: Final answer
x = 439,037.55
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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.