Finding the Fourth Proportional to 398,582,421.60, 597,369,747.60 and 355,248,328.80
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Solution
The fourth proportional to 398,582,421.60, 597,369,747.60 and 355,248,328.80 is: 532,423,391.02
Step by Step Solution
- Step 1: Write the proportion equation
398,582,421.60 : 597,369,747.60 = 355,248,328.80 : x - Step 2: Convert to fraction form
398,582,421.60/597,369,747.60 = 355,248,328.80/x - Step 3: Cross multiply
398,582,421.60x = 597,369,747.60 × 355,248,328.80 - Step 4: Simplify right side
398,582,421.60x = 212,214,604,510,577,824 - Step 5: Solve for x
x = 212,214,604,510,577,824/398,582,421.60 - Step 6: Final answer
x = 532,423,391.02
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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.