Finding the Fourth Proportional to 457,541,712.80, 686,403,898.30 and 239,290,310.24
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Solution
The fourth proportional to 457,541,712.80, 686,403,898.30 and 239,290,310.24 is: 358,983,229.68
Step by Step Solution
- Step 1: Write the proportion equation
457,541,712.80 : 686,403,898.30 = 239,290,310.24 : x - Step 2: Convert to fraction form
457,541,712.80/686,403,898.30 = 239,290,310.24/x - Step 3: Cross multiply
457,541,712.80x = 686,403,898.30 × 239,290,310.24 - Step 4: Simplify right side
457,541,712.80x = 164,249,801,774,152,416 - Step 5: Solve for x
x = 164,249,801,774,152,416/457,541,712.80 - Step 6: Final answer
x = 358,983,229.68
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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.