Finding the Fourth Proportional to 553,174,220.20, 829,761,330.30 and 430,730,213.80
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Solution
The fourth proportional to 553,174,220.20, 829,761,330.30 and 430,730,213.80 is: 646,095,320.70
Step by Step Solution
- Step 1: Write the proportion equation
553,174,220.20 : 829,761,330.30 = 430,730,213.80 : x - Step 2: Convert to fraction form
553,174,220.20/829,761,330.30 = 430,730,213.80/x - Step 3: Cross multiply
553,174,220.20x = 829,761,330.30 × 430,730,213.80 - Step 4: Simplify right side
553,174,220.20x = 357,403,275,203,091,392 - Step 5: Solve for x
x = 357,403,275,203,091,392/553,174,220.20 - Step 6: Final answer
x = 646,095,320.70
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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.