Finding the Fourth Proportional to 390,409,600.21, 581,556,700.00 and 369,263,739.28
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Solution
The fourth proportional to 390,409,600.21, 581,556,700.00 and 369,263,739.28 is: 550,057,686.92
Step by Step Solution
- Step 1: Write the proportion equation
390,409,600.21 : 581,556,700.00 = 369,263,739.28 : x - Step 2: Convert to fraction form
390,409,600.21/581,556,700.00 = 369,263,739.28/x - Step 3: Cross multiply
390,409,600.21x = 581,556,700.00 × 369,263,739.28 - Step 4: Simplify right side
390,409,600.21x = 214,747,801,643,370,336 - Step 5: Solve for x
x = 214,747,801,643,370,336/390,409,600.21 - Step 6: Final answer
x = 550,057,686.92
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.