Finding the Fourth Proportional to 657,689,866.48, 907,728,959.33 and 393,400,935.68
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Solution
The fourth proportional to 657,689,866.48, 907,728,959.33 and 393,400,935.68 is: 542,963,241.70
Step by Step Solution
- Step 1: Write the proportion equation
657,689,866.48 : 907,728,959.33 = 393,400,935.68 : x - Step 2: Convert to fraction form
657,689,866.48/907,728,959.33 = 393,400,935.68/x - Step 3: Cross multiply
657,689,866.48x = 907,728,959.33 × 393,400,935.68 - Step 4: Simplify right side
657,689,866.48x = 357,101,421,939,224,256 - Step 5: Solve for x
x = 357,101,421,939,224,256/657,689,866.48 - Step 6: Final answer
x = 542,963,241.70
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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.