Finding the Fourth Proportional to 405,423.48, 607,877.64 and 355,603.62
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Solution
The fourth proportional to 405,423.48, 607,877.64 and 355,603.62 is: 533,179.50
Step by Step Solution
- Step 1: Write the proportion equation
405,423.48 : 607,877.64 = 355,603.62 : x - Step 2: Convert to fraction form
405,423.48/607,877.64 = 355,603.62/x - Step 3: Cross multiply
405,423.48x = 607,877.64 × 355,603.62 - Step 4: Simplify right side
405,423.48x = 216,163,489,301.06 - Step 5: Solve for x
x = 216,163,489,301.06/405,423.48 - Step 6: Final answer
x = 533,179.50
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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.