Finding the Fourth Proportional to 389,688,041.61, 537,765,211.68 and 211,067,486.13
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Solution
The fourth proportional to 389,688,041.61, 537,765,211.68 and 211,067,486.13 is: 291,270,809.56
Step by Step Solution
- Step 1: Write the proportion equation
389,688,041.61 : 537,765,211.68 = 211,067,486.13 : x - Step 2: Convert to fraction form
389,688,041.61/537,765,211.68 = 211,067,486.13/x - Step 3: Cross multiply
389,688,041.61x = 537,765,211.68 × 211,067,486.13 - Step 4: Simplify right side
389,688,041.61x = 113,504,751,357,464,896 - Step 5: Solve for x
x = 113,504,751,357,464,896/389,688,041.61 - Step 6: Final answer
x = 291,270,809.56
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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.