Finding the Fourth Proportional to 428,142,712.06, 590,853,184.14 and 239,974,483.78
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Solution
The fourth proportional to 428,142,712.06, 590,853,184.14 and 239,974,483.78 is: 331,173,890.99
Step by Step Solution
- Step 1: Write the proportion equation
428,142,712.06 : 590,853,184.14 = 239,974,483.78 : x - Step 2: Convert to fraction form
428,142,712.06/590,853,184.14 = 239,974,483.78/x - Step 3: Cross multiply
428,142,712.06x = 590,853,184.14 × 239,974,483.78 - Step 4: Simplify right side
428,142,712.06x = 141,789,687,853,765,776 - Step 5: Solve for x
x = 141,789,687,853,765,776/428,142,712.06 - Step 6: Final answer
x = 331,173,890.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.