Finding the Fourth Proportional to 810,225,438.69, 1,118,112,239.91 and 438,947,470.07
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Solution
The fourth proportional to 810,225,438.69, 1,118,112,239.91 and 438,947,470.07 is: 605,748,123.33
Step by Step Solution
- Step 1: Write the proportion equation
810,225,438.69 : 1,118,112,239.91 = 438,947,470.07 : x - Step 2: Convert to fraction form
810,225,438.69/1,118,112,239.91 = 438,947,470.07/x - Step 3: Cross multiply
810,225,438.69x = 1,118,112,239.91 × 438,947,470.07 - Step 4: Simplify right side
810,225,438.69x = 490,792,538,963,021,952 - Step 5: Solve for x
x = 490,792,538,963,021,952/810,225,438.69 - Step 6: Final answer
x = 605,748,123.33
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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.