Finding the Fourth Proportional to 704,533,564.79, 972,229,651.49 and 391,287,947.75
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Solution
The fourth proportional to 704,533,564.79, 972,229,651.49 and 391,287,947.75 is: 539,962,556.91
Step by Step Solution
- Step 1: Write the proportion equation
704,533,564.79 : 972,229,651.49 = 391,287,947.75 : x - Step 2: Convert to fraction form
704,533,564.79/972,229,651.49 = 391,287,947.75/x - Step 3: Cross multiply
704,533,564.79x = 972,229,651.49 × 391,287,947.75 - Step 4: Simplify right side
704,533,564.79x = 380,421,745,071,263,424 - Step 5: Solve for x
x = 380,421,745,071,263,424/704,533,564.79 - Step 6: Final answer
x = 539,962,556.91
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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.