Finding the Fourth Proportional to 1,244,208,088.20, 1,866,312,132.36 and 426,048,472.20
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Solution
The fourth proportional to 1,244,208,088.20, 1,866,312,132.36 and 426,048,472.20 is: 639,072,708.32
Step by Step Solution
- Step 1: Write the proportion equation
1,244,208,088.20 : 1,866,312,132.36 = 426,048,472.20 : x - Step 2: Convert to fraction form
1,244,208,088.20/1,866,312,132.36 = 426,048,472.20/x - Step 3: Cross multiply
1,244,208,088.20x = 1,866,312,132.36 × 426,048,472.20 - Step 4: Simplify right side
1,244,208,088.20x = 795,139,432,640,302,080 - Step 5: Solve for x
x = 795,139,432,640,302,080/1,244,208,088.20 - Step 6: Final answer
x = 639,072,708.32
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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.