Finding the Fourth Proportional to 938,603.84, 1,296,342.42 and 636,272.96
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Solution
The fourth proportional to 938,603.84, 1,296,342.42 and 636,272.96 is: 878,781.43
Step by Step Solution
- Step 1: Write the proportion equation
938,603.84 : 1,296,342.42 = 636,272.96 : x - Step 2: Convert to fraction form
938,603.84/1,296,342.42 = 636,272.96/x - Step 3: Cross multiply
938,603.84x = 1,296,342.42 × 636,272.96 - Step 4: Simplify right side
938,603.84x = 824,827,628,746.96 - Step 5: Solve for x
x = 824,827,628,746.96/938,603.84 - Step 6: Final answer
x = 878,781.43
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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.