Finding the Fourth Proportional to 608,407.36, 839,714.47 and 390,887.95
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Solution
The fourth proportional to 608,407.36, 839,714.47 and 390,887.95 is: 539,497.53
Step by Step Solution
- Step 1: Write the proportion equation
608,407.36 : 839,714.47 = 390,887.95 : x - Step 2: Convert to fraction form
608,407.36/839,714.47 = 390,887.95/x - Step 3: Cross multiply
608,407.36x = 839,714.47 × 390,887.95 - Step 4: Simplify right side
608,407.36x = 328,234,264,687.13 - Step 5: Solve for x
x = 328,234,264,687.13/608,407.36 - Step 6: Final answer
x = 539,497.53
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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.