Finding the Fourth Proportional to 579,702,981.30, 869,554,471.95 and 396,036,971.70
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Solution
The fourth proportional to 579,702,981.30, 869,554,471.95 and 396,036,971.70 is: 594,055,457.55
Step by Step Solution
- Step 1: Write the proportion equation
579,702,981.30 : 869,554,471.95 = 396,036,971.70 : x - Step 2: Convert to fraction form
579,702,981.30/869,554,471.95 = 396,036,971.70/x - Step 3: Cross multiply
579,702,981.30x = 869,554,471.95 × 396,036,971.70 - Step 4: Simplify right side
579,702,981.30x = 344,375,719,799,270,592 - Step 5: Solve for x
x = 344,375,719,799,270,592/579,702,981.30 - Step 6: Final answer
x = 594,055,457.55
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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.