Finding the Fourth Proportional to 998,746,015.20, 1,497,747,416.40 and 343,513,125.60
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Solution
The fourth proportional to 998,746,015.20, 1,497,747,416.40 and 343,513,125.60 is: 515,141,876.45
Step by Step Solution
- Step 1: Write the proportion equation
998,746,015.20 : 1,497,747,416.40 = 343,513,125.60 : x - Step 2: Convert to fraction form
998,746,015.20/1,497,747,416.40 = 343,513,125.60/x - Step 3: Cross multiply
998,746,015.20x = 1,497,747,416.40 × 343,513,125.60 - Step 4: Simplify right side
998,746,015.20x = 514,495,896,366,888,768 - Step 5: Solve for x
x = 514,495,896,366,888,768/998,746,015.20 - Step 6: Final answer
x = 515,141,876.45
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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.