Finding the Fourth Proportional to 991,246,368.56, 1,487,038,946.99 and 408,662,143.92
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Solution
The fourth proportional to 991,246,368.56, 1,487,038,946.99 and 408,662,143.92 is: 613,063,052.18
Step by Step Solution
- Step 1: Write the proportion equation
991,246,368.56 : 1,487,038,946.99 = 408,662,143.92 : x - Step 2: Convert to fraction form
991,246,368.56/1,487,038,946.99 = 408,662,143.92/x - Step 3: Cross multiply
991,246,368.56x = 1,487,038,946.99 × 408,662,143.92 - Step 4: Simplify right side
991,246,368.56x = 607,696,524,167,429,248 - Step 5: Solve for x
x = 607,696,524,167,429,248/991,246,368.56 - Step 6: Final answer
x = 613,063,052.18
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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.