Finding the Fourth Proportional to 520,090.10, 778,579.95 and 489,331.70
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Solution
The fourth proportional to 520,090.10, 778,579.95 and 489,331.70 is: 732,534.33
Step by Step Solution
- Step 1: Write the proportion equation
520,090.10 : 778,579.95 = 489,331.70 : x - Step 2: Convert to fraction form
520,090.10/778,579.95 = 489,331.70/x - Step 3: Cross multiply
520,090.10x = 778,579.95 × 489,331.70 - Step 4: Simplify right side
520,090.10x = 380,983,850,519.42 - Step 5: Solve for x
x = 380,983,850,519.42/520,090.10 - Step 6: Final answer
x = 732,534.33
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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.