Finding the Fourth Proportional to 993,373,486.80, 1,490,060,230.20 and 475,537,376.40
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Solution
The fourth proportional to 993,373,486.80, 1,490,060,230.20 and 475,537,376.40 is: 713,306,064.60
Step by Step Solution
- Step 1: Write the proportion equation
993,373,486.80 : 1,490,060,230.20 = 475,537,376.40 : x - Step 2: Convert to fraction form
993,373,486.80/1,490,060,230.20 = 475,537,376.40/x - Step 3: Cross multiply
993,373,486.80x = 1,490,060,230.20 × 475,537,376.40 - Step 4: Simplify right side
993,373,486.80x = 708,579,332,547,288,064 - Step 5: Solve for x
x = 708,579,332,547,288,064/993,373,486.80 - Step 6: Final answer
x = 713,306,064.60
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Double scale
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Similar ratio
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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.