Finding the Fourth Proportional to 7,918,215.30, 11,872,511.55 and 3,120,374.70
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Solution
The fourth proportional to 7,918,215.30, 11,872,511.55 and 3,120,374.70 is: 4,678,666.00
Step by Step Solution
- Step 1: Write the proportion equation
7,918,215.30 : 11,872,511.55 = 3,120,374.70 : x - Step 2: Convert to fraction form
7,918,215.30/11,872,511.55 = 3,120,374.70/x - Step 3: Cross multiply
7,918,215.30x = 11,872,511.55 × 3,120,374.70 - Step 4: Simplify right side
7,918,215.30x = 37,046,684,666,077.79 - Step 5: Solve for x
x = 37,046,684,666,077.79/7,918,215.30 - Step 6: Final answer
x = 4,678,666.00
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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.