Finding the Fourth Proportional to 639,821,625.30, 959,732,437.95 and 589,433,145.30
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Solution
The fourth proportional to 639,821,625.30, 959,732,437.95 and 589,433,145.30 is: 884,149,717.95
Step by Step Solution
- Step 1: Write the proportion equation
639,821,625.30 : 959,732,437.95 = 589,433,145.30 : x - Step 2: Convert to fraction form
639,821,625.30/959,732,437.95 = 589,433,145.30/x - Step 3: Cross multiply
639,821,625.30x = 959,732,437.95 × 589,433,145.30 - Step 4: Simplify right side
639,821,625.30x = 565,698,109,547,305,536 - Step 5: Solve for x
x = 565,698,109,547,305,536/639,821,625.30 - Step 6: Final answer
x = 884,149,717.95
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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.