Finding the Fourth Proportional to 712,934.60, 1,070,006.70 and 292,512.20
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Solution
The fourth proportional to 712,934.60, 1,070,006.70 and 292,512.20 is: 439,016.45
Step by Step Solution
- Step 1: Write the proportion equation
712,934.60 : 1,070,006.70 = 292,512.20 : x - Step 2: Convert to fraction form
712,934.60/1,070,006.70 = 292,512.20/x - Step 3: Cross multiply
712,934.60x = 1,070,006.70 × 292,512.20 - Step 4: Simplify right side
712,934.60x = 312,990,013,831.74 - Step 5: Solve for x
x = 312,990,013,831.74/712,934.60 - Step 6: Final answer
x = 439,016.45
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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.