Finding the Fourth Proportional to 1,432,153.68, 1,976,384.56 and 778,781.76
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Solution
The fourth proportional to 1,432,153.68, 1,976,384.56 and 778,781.76 is: 1,074,725.62
Step by Step Solution
- Step 1: Write the proportion equation
1,432,153.68 : 1,976,384.56 = 778,781.76 : x - Step 2: Convert to fraction form
1,432,153.68/1,976,384.56 = 778,781.76/x - Step 3: Cross multiply
1,432,153.68x = 1,976,384.56 × 778,781.76 - Step 4: Simplify right side
1,432,153.68x = 1,539,172,246,073.63 - Step 5: Solve for x
x = 1,539,172,246,073.63/1,432,153.68 - Step 6: Final answer
x = 1,074,725.62
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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.