Finding the Fourth Proportional to 750,390,963.20, 1,035,538,743.84 and 420,368,425.28
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Solution
The fourth proportional to 750,390,963.20, 1,035,538,743.84 and 420,368,425.28 is: 580,107,986.92
Step by Step Solution
- Step 1: Write the proportion equation
750,390,963.20 : 1,035,538,743.84 = 420,368,425.28 : x - Step 2: Convert to fraction form
750,390,963.20/1,035,538,743.84 = 420,368,425.28/x - Step 3: Cross multiply
750,390,963.20x = 1,035,538,743.84 × 420,368,425.28 - Step 4: Simplify right side
750,390,963.20x = 435,307,791,064,450,112 - Step 5: Solve for x
x = 435,307,791,064,450,112/750,390,963.20 - Step 6: Final answer
x = 580,107,986.92
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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.