Finding the Fourth Proportional to 920,496,701.07, 1,270,285,398.90 and 497,110,321.53
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Solution
The fourth proportional to 920,496,701.07, 1,270,285,398.90 and 497,110,321.53 is: 686,012,217.48
Step by Step Solution
- Step 1: Write the proportion equation
920,496,701.07 : 1,270,285,398.90 = 497,110,321.53 : x - Step 2: Convert to fraction form
920,496,701.07/1,270,285,398.90 = 497,110,321.53/x - Step 3: Cross multiply
920,496,701.07x = 1,270,285,398.90 × 497,110,321.53 - Step 4: Simplify right side
920,496,701.07x = 631,471,983,082,043,264 - Step 5: Solve for x
x = 631,471,983,082,043,264/920,496,701.07 - Step 6: Final answer
x = 686,012,217.48
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.