Finding the Fourth Proportional to 636,024,628.80, 877,708,707.84 and 357,567,390.72
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Solution
The fourth proportional to 636,024,628.80, 877,708,707.84 and 357,567,390.72 is: 493,440,030.88
Step by Step Solution
- Step 1: Write the proportion equation
636,024,628.80 : 877,708,707.84 = 357,567,390.72 : x - Step 2: Convert to fraction form
636,024,628.80/877,708,707.84 = 357,567,390.72/x - Step 3: Cross multiply
636,024,628.80x = 877,708,707.84 × 357,567,390.72 - Step 4: Simplify right side
636,024,628.80x = 313,840,012,474,571,648 - Step 5: Solve for x
x = 313,840,012,474,571,648/636,024,628.80 - Step 6: Final answer
x = 493,440,030.88
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1.5x scale
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.