Finding the Fourth Proportional to 390,141,627.44, 537,874,619.63 and 309,939,725.36
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Solution
The fourth proportional to 390,141,627.44, 537,874,619.63 and 309,939,725.36 is: 427,303,061.65
Step by Step Solution
- Step 1: Write the proportion equation
390,141,627.44 : 537,874,619.63 = 309,939,725.36 : x - Step 2: Convert to fraction form
390,141,627.44/537,874,619.63 = 309,939,725.36/x - Step 3: Cross multiply
390,141,627.44x = 537,874,619.63 × 309,939,725.36 - Step 4: Simplify right side
390,141,627.44x = 166,708,711,881,997,600 - Step 5: Solve for x
x = 166,708,711,881,997,600/390,141,627.44 - Step 6: Final answer
x = 427,303,061.65
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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.