Finding the Fourth Proportional to 672,743,509.30, 1,009,115,263.95 and 491,344,981.30
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Solution
The fourth proportional to 672,743,509.30, 1,009,115,263.95 and 491,344,981.30 is: 737,017,471.95
Step by Step Solution
- Step 1: Write the proportion equation
672,743,509.30 : 1,009,115,263.95 = 491,344,981.30 : x - Step 2: Convert to fraction form
672,743,509.30/1,009,115,263.95 = 491,344,981.30/x - Step 3: Cross multiply
672,743,509.30x = 1,009,115,263.95 × 491,344,981.30 - Step 4: Simplify right side
672,743,509.30x = 495,823,720,495,057,344 - Step 5: Solve for x
x = 495,823,720,495,057,344/672,743,509.30 - Step 6: Final answer
x = 737,017,471.95
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Double scale
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Similar ratio
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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.