Finding the Fourth Proportional to 319,134,681.80, 478,702,022.70 and 278,823,897.80
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Solution
The fourth proportional to 319,134,681.80, 478,702,022.70 and 278,823,897.80 is: 418,235,846.70
Step by Step Solution
- Step 1: Write the proportion equation
319,134,681.80 : 478,702,022.70 = 278,823,897.80 : x - Step 2: Convert to fraction form
319,134,681.80/478,702,022.70 = 278,823,897.80/x - Step 3: Cross multiply
319,134,681.80x = 478,702,022.70 × 278,823,897.80 - Step 4: Simplify right side
319,134,681.80x = 133,473,563,853,958,080 - Step 5: Solve for x
x = 133,473,563,853,958,080/319,134,681.80 - Step 6: Final answer
x = 418,235,846.70
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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.