Finding the Fourth Proportional to 621,153.80, 931,730.70 and 424,545.80
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Solution
The fourth proportional to 621,153.80, 931,730.70 and 424,545.80 is: 636,818.70
Step by Step Solution
- Step 1: Write the proportion equation
621,153.80 : 931,730.70 = 424,545.80 : x - Step 2: Convert to fraction form
621,153.80/931,730.70 = 424,545.80/x - Step 3: Cross multiply
621,153.80x = 931,730.70 × 424,545.80 - Step 4: Simplify right side
621,153.80x = 395,562,355,416.06 - Step 5: Solve for x
x = 395,562,355,416.06/621,153.80 - Step 6: Final answer
x = 636,818.70
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1.5x scale
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.