Finding the Fourth Proportional to 1,387,671.12, 1,915,306.20 and 903,393
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Solution
The fourth proportional to 1,387,671.12, 1,915,306.20 and 903,393 is: 1,246,890.70
Step by Step Solution
- Step 1: Write the proportion equation
1,387,671.12 : 1,915,306.20 = 903,393 : x - Step 2: Convert to fraction form
1,387,671.12/1,915,306.20 = 903,393/x - Step 3: Cross multiply
1,387,671.12x = 1,915,306.20 × 903,393 - Step 4: Simplify right side
1,387,671.12x = 1,730,274,213,936.60 - Step 5: Solve for x
x = 1,730,274,213,936.60/1,387,671.12 - Step 6: Final answer
x = 1,246,890.70
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.