Finding the Fourth Proportional to 704,994,356.76, 972,849,563.50 and 391,717,858.84
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Solution
The fourth proportional to 704,994,356.76, 972,849,563.50 and 391,717,858.84 is: 540,546,948.12
Step by Step Solution
- Step 1: Write the proportion equation
704,994,356.76 : 972,849,563.50 = 391,717,858.84 : x - Step 2: Convert to fraction form
704,994,356.76/972,849,563.50 = 391,717,858.84/x - Step 3: Cross multiply
704,994,356.76x = 972,849,563.50 × 391,717,858.84 - Step 4: Simplify right side
704,994,356.76x = 381,082,547,987,648,576 - Step 5: Solve for x
x = 381,082,547,987,648,576/704,994,356.76 - Step 6: Final answer
x = 540,546,948.12
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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.