Finding the Fourth Proportional to 390,463,623.36, 538,839,591.84 and 214,252,776
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Solution
The fourth proportional to 390,463,623.36, 538,839,591.84 and 214,252,776 is: 295,668,716.53
Step by Step Solution
- Step 1: Write the proportion equation
390,463,623.36 : 538,839,591.84 = 214,252,776 : x - Step 2: Convert to fraction form
390,463,623.36/538,839,591.84 = 214,252,776/x - Step 3: Cross multiply
390,463,623.36x = 538,839,591.84 × 214,252,776 - Step 4: Simplify right side
390,463,623.36x = 115,447,878,370,426,960 - Step 5: Solve for x
x = 115,447,878,370,426,960/390,463,623.36 - Step 6: Final answer
x = 295,668,716.53
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.