Finding the Fourth Proportional to 398,642,005.80, 597,963,008.70 and 353,292,373.80
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Solution
The fourth proportional to 398,642,005.80, 597,963,008.70 and 353,292,373.80 is: 529,938,560.70
Step by Step Solution
- Step 1: Write the proportion equation
398,642,005.80 : 597,963,008.70 = 353,292,373.80 : x - Step 2: Convert to fraction form
398,642,005.80/597,963,008.70 = 353,292,373.80/x - Step 3: Cross multiply
398,642,005.80x = 597,963,008.70 × 353,292,373.80 - Step 4: Simplify right side
398,642,005.80x = 211,255,770,788,213,088 - Step 5: Solve for x
x = 211,255,770,788,213,088/398,642,005.80 - Step 6: Final answer
x = 529,938,560.70
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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.