Finding the Fourth Proportional to 472,392,414.30, 708,588,621.45 and 386,298,972.30
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Solution
The fourth proportional to 472,392,414.30, 708,588,621.45 and 386,298,972.30 is: 579,448,458.45
Step by Step Solution
- Step 1: Write the proportion equation
472,392,414.30 : 708,588,621.45 = 386,298,972.30 : x - Step 2: Convert to fraction form
472,392,414.30/708,588,621.45 = 386,298,972.30/x - Step 3: Cross multiply
472,392,414.30x = 708,588,621.45 × 386,298,972.30 - Step 4: Simplify right side
472,392,414.30x = 273,727,056,249,608,768 - Step 5: Solve for x
x = 273,727,056,249,608,768/472,392,414.30 - Step 6: Final answer
x = 579,448,458.45
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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.