Finding the Fourth Proportional to 646,865.80, 970,298.70 and 553,553.80
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Solution
The fourth proportional to 646,865.80, 970,298.70 and 553,553.80 is: 830,330.70
Step by Step Solution
- Step 1: Write the proportion equation
646,865.80 : 970,298.70 = 553,553.80 : x - Step 2: Convert to fraction form
646,865.80/970,298.70 = 553,553.80/x - Step 3: Cross multiply
646,865.80x = 970,298.70 × 553,553.80 - Step 4: Simplify right side
646,865.80x = 537,112,532,520.06 - Step 5: Solve for x
x = 537,112,532,520.06/646,865.80 - Step 6: Final answer
x = 830,330.70
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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.