Finding the Fourth Proportional to 478,334,703.88, 660,101,899.62 and 258,318,129.88
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Solution
The fourth proportional to 478,334,703.88, 660,101,899.62 and 258,318,129.88 is: 356,479,023.70
Step by Step Solution
- Step 1: Write the proportion equation
478,334,703.88 : 660,101,899.62 = 258,318,129.88 : x - Step 2: Convert to fraction form
478,334,703.88/660,101,899.62 = 258,318,129.88/x - Step 3: Cross multiply
478,334,703.88x = 660,101,899.62 × 258,318,129.88 - Step 4: Simplify right side
478,334,703.88x = 170,516,288,240,073,888 - Step 5: Solve for x
x = 170,516,288,240,073,888/478,334,703.88 - Step 6: Final answer
x = 356,479,023.70
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.