Finding the Fourth Proportional to 473,419.40, 710,129.10 and 421,809.80
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Solution
The fourth proportional to 473,419.40, 710,129.10 and 421,809.80 is: 632,714.70
Step by Step Solution
- Step 1: Write the proportion equation
473,419.40 : 710,129.10 = 421,809.80 : x - Step 2: Convert to fraction form
473,419.40/710,129.10 = 421,809.80/x - Step 3: Cross multiply
473,419.40x = 710,129.10 × 421,809.80 - Step 4: Simplify right side
473,419.40x = 299,539,413,645.18 - Step 5: Solve for x
x = 299,539,413,645.18/473,419.40 - Step 6: Final answer
x = 632,714.70
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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.