Finding the Fourth Proportional to 505,781,490.60, 759,239,106.30 and 391,273,669.80
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Solution
The fourth proportional to 505,781,490.60, 759,239,106.30 and 391,273,669.80 is: 587,349,036.88
Step by Step Solution
- Step 1: Write the proportion equation
505,781,490.60 : 759,239,106.30 = 391,273,669.80 : x - Step 2: Convert to fraction form
505,781,490.60/759,239,106.30 = 391,273,669.80/x - Step 3: Cross multiply
505,781,490.60x = 759,239,106.30 × 391,273,669.80 - Step 4: Simplify right side
505,781,490.60x = 297,070,271,377,673,280 - Step 5: Solve for x
x = 297,070,271,377,673,280/505,781,490.60 - Step 6: Final answer
x = 587,349,036.88
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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.