Finding the Fourth Proportional to 810,273,114.55, 1,117,559,962.68 and 697,434,655.09
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Solution
The fourth proportional to 810,273,114.55, 1,117,559,962.68 and 697,434,655.09 is: 961,928,802.92
Step by Step Solution
- Step 1: Write the proportion equation
810,273,114.55 : 1,117,559,962.68 = 697,434,655.09 : x - Step 2: Convert to fraction form
810,273,114.55/1,117,559,962.68 = 697,434,655.09/x - Step 3: Cross multiply
810,273,114.55x = 1,117,559,962.68 × 697,434,655.09 - Step 4: Simplify right side
810,273,114.55x = 779,425,047,114,119,168 - Step 5: Solve for x
x = 779,425,047,114,119,168/810,273,114.55 - Step 6: Final answer
x = 961,928,802.92
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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.