Finding the Fourth Proportional to 452,688.78, 679,352.26 and 212,813.63
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Solution
The fourth proportional to 452,688.78, 679,352.26 and 212,813.63 is: 319,370.45
Step by Step Solution
- Step 1: Write the proportion equation
452,688.78 : 679,352.26 = 212,813.63 : x - Step 2: Convert to fraction form
452,688.78/679,352.26 = 212,813.63/x - Step 3: Cross multiply
452,688.78x = 679,352.26 × 212,813.63 - Step 4: Simplify right side
452,688.78x = 144,575,420,499.30 - Step 5: Solve for x
x = 144,575,420,499.30/452,688.78 - Step 6: Final answer
x = 319,370.45
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1.5x scale
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.