Finding the Fourth Proportional to 516,630,716.88, 712,955,953.80 and 281,679,460.08
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Solution
The fourth proportional to 516,630,716.88, 712,955,953.80 and 281,679,460.08 is: 388,720,688.81
Step by Step Solution
- Step 1: Write the proportion equation
516,630,716.88 : 712,955,953.80 = 281,679,460.08 : x - Step 2: Convert to fraction form
516,630,716.88/712,955,953.80 = 281,679,460.08/x - Step 3: Cross multiply
516,630,716.88x = 712,955,953.80 × 281,679,460.08 - Step 4: Simplify right side
516,630,716.88x = 200,825,048,127,205,408 - Step 5: Solve for x
x = 200,825,048,127,205,408/516,630,716.88 - Step 6: Final answer
x = 388,720,688.81
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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.