Finding the Fourth Proportional to 745,204,783.23, 1,028,386,647.90 and 427,639,743.63
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Solution
The fourth proportional to 745,204,783.23, 1,028,386,647.90 and 427,639,743.63 is: 590,145,168.63
Step by Step Solution
- Step 1: Write the proportion equation
745,204,783.23 : 1,028,386,647.90 = 427,639,743.63 : x - Step 2: Convert to fraction form
745,204,783.23/1,028,386,647.90 = 427,639,743.63/x - Step 3: Cross multiply
745,204,783.23x = 1,028,386,647.90 × 427,639,743.63 - Step 4: Simplify right side
745,204,783.23x = 439,779,002,460,471,040 - Step 5: Solve for x
x = 439,779,002,460,471,040/745,204,783.23 - Step 6: Final answer
x = 590,145,168.63
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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.