Finding the Fourth Proportional to 817,753,687.20, 1,226,630,530.80 and 495,267,415.20
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Solution
The fourth proportional to 817,753,687.20, 1,226,630,530.80 and 495,267,415.20 is: 742,901,122.80
Step by Step Solution
- Step 1: Write the proportion equation
817,753,687.20 : 1,226,630,530.80 = 495,267,415.20 : x - Step 2: Convert to fraction form
817,753,687.20/1,226,630,530.80 = 495,267,415.20/x - Step 3: Cross multiply
817,753,687.20x = 1,226,630,530.80 × 495,267,415.20 - Step 4: Simplify right side
817,753,687.20x = 607,510,132,394,720,000 - Step 5: Solve for x
x = 607,510,132,394,720,000/817,753,687.20 - Step 6: Final answer
x = 742,901,122.80
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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.