Finding the Fourth Proportional to 852,368,885.20, 1,278,553,327.80 and 307,128,206.80
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Solution
The fourth proportional to 852,368,885.20, 1,278,553,327.80 and 307,128,206.80 is: 460,692,310.20
Step by Step Solution
- Step 1: Write the proportion equation
852,368,885.20 : 1,278,553,327.80 = 307,128,206.80 : x - Step 2: Convert to fraction form
852,368,885.20/1,278,553,327.80 = 307,128,206.80/x - Step 3: Cross multiply
852,368,885.20x = 1,278,553,327.80 × 307,128,206.80 - Step 4: Simplify right side
852,368,885.20x = 392,679,790,865,386,560 - Step 5: Solve for x
x = 392,679,790,865,386,560/852,368,885.20 - Step 6: Final answer
x = 460,692,310.20
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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.