Finding the Fourth Proportional to 961,037,189.12, 1,326,330,169.38 and 584,720,492.76
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Solution
The fourth proportional to 961,037,189.12, 1,326,330,169.38 and 584,720,492.76 is: 806,974,421.99
Step by Step Solution
- Step 1: Write the proportion equation
961,037,189.12 : 1,326,330,169.38 = 584,720,492.76 : x - Step 2: Convert to fraction form
961,037,189.12/1,326,330,169.38 = 584,720,492.76/x - Step 3: Cross multiply
961,037,189.12x = 1,326,330,169.38 × 584,720,492.76 - Step 4: Simplify right side
961,037,189.12x = 775,532,430,202,327,936 - Step 5: Solve for x
x = 775,532,430,202,327,936/961,037,189.12 - Step 6: Final answer
x = 806,974,421.99
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Double scale
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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.