Finding the Fourth Proportional to 646,836,246.12, 892,634,019.63 and 368,403,677.40
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Solution
The fourth proportional to 646,836,246.12, 892,634,019.63 and 368,403,677.40 is: 508,397,074.80
Step by Step Solution
- Step 1: Write the proportion equation
646,836,246.12 : 892,634,019.63 = 368,403,677.40 : x - Step 2: Convert to fraction form
646,836,246.12/892,634,019.63 = 368,403,677.40/x - Step 3: Cross multiply
646,836,246.12x = 892,634,019.63 × 368,403,677.40 - Step 4: Simplify right side
646,836,246.12x = 328,849,655,404,035,776 - Step 5: Solve for x
x = 328,849,655,404,035,776/646,836,246.12 - Step 6: Final answer
x = 508,397,074.80
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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.