Finding the Fourth Proportional to 605,643.80, 908,465.70 and 487,545.80
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Solution
The fourth proportional to 605,643.80, 908,465.70 and 487,545.80 is: 731,318.70
Step by Step Solution
- Step 1: Write the proportion equation
605,643.80 : 908,465.70 = 487,545.80 : x - Step 2: Convert to fraction form
605,643.80/908,465.70 = 487,545.80/x - Step 3: Cross multiply
605,643.80x = 908,465.70 × 487,545.80 - Step 4: Simplify right side
605,643.80x = 442,918,636,479.06 - Step 5: Solve for x
x = 442,918,636,479.06/605,643.80 - Step 6: Final answer
x = 731,318.70
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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.