Finding the Fourth Proportional to 472,395,420.60, 708,593,130.90 and 265,771,159.80
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Solution
The fourth proportional to 472,395,420.60, 708,593,130.90 and 265,771,159.80 is: 398,656,739.70
Step by Step Solution
- Step 1: Write the proportion equation
472,395,420.60 : 708,593,130.90 = 265,771,159.80 : x - Step 2: Convert to fraction form
472,395,420.60/708,593,130.90 = 265,771,159.80/x - Step 3: Cross multiply
472,395,420.60x = 708,593,130.90 × 265,771,159.80 - Step 4: Simplify right side
472,395,420.60x = 188,323,618,225,606,208 - Step 5: Solve for x
x = 188,323,618,225,606,208/472,395,420.60 - Step 6: Final answer
x = 398,656,739.70
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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.