Finding the Fourth Proportional to 326,617,691.60, 489,926,537.40 and 217,778,574.80
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Solution
The fourth proportional to 326,617,691.60, 489,926,537.40 and 217,778,574.80 is: 326,667,862.20
Step by Step Solution
- Step 1: Write the proportion equation
326,617,691.60 : 489,926,537.40 = 217,778,574.80 : x - Step 2: Convert to fraction form
326,617,691.60/489,926,537.40 = 217,778,574.80/x - Step 3: Cross multiply
326,617,691.60x = 489,926,537.40 × 217,778,574.80 - Step 4: Simplify right side
326,617,691.60x = 106,695,503,071,670,896 - Step 5: Solve for x
x = 106,695,503,071,670,896/326,617,691.60 - Step 6: Final answer
x = 326,667,862.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.