Finding the Fourth Proportional to 839,808,213.30, 1,259,712,319.95 and 622,129,979.70
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Solution
The fourth proportional to 839,808,213.30, 1,259,712,319.95 and 622,129,979.70 is: 933,194,969.55
Step by Step Solution
- Step 1: Write the proportion equation
839,808,213.30 : 1,259,712,319.95 = 622,129,979.70 : x - Step 2: Convert to fraction form
839,808,213.30/1,259,712,319.95 = 622,129,979.70/x - Step 3: Cross multiply
839,808,213.30x = 1,259,712,319.95 × 622,129,979.70 - Step 4: Simplify right side
839,808,213.30x = 783,704,800,038,333,440 - Step 5: Solve for x
x = 783,704,800,038,333,440/839,808,213.30 - Step 6: Final answer
x = 933,194,969.55
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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.