Finding the Fourth Proportional to 472,395,400.80, 708,593,101.20 and 429,348,679.80
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Solution
The fourth proportional to 472,395,400.80, 708,593,101.20 and 429,348,679.80 is: 644,023,019.70
Step by Step Solution
- Step 1: Write the proportion equation
472,395,400.80 : 708,593,101.20 = 429,348,679.80 : x - Step 2: Convert to fraction form
472,395,400.80/708,593,101.20 = 429,348,679.80/x - Step 3: Cross multiply
472,395,400.80x = 708,593,101.20 × 429,348,679.80 - Step 4: Simplify right side
472,395,400.80x = 304,233,512,515,607,808 - Step 5: Solve for x
x = 304,233,512,515,607,808/472,395,400.80 - Step 6: Final answer
x = 644,023,019.70
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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.