Finding the Fourth Proportional to 420,697,943.60, 633,918,485.24 and 345,700,989.68
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Solution
The fourth proportional to 420,697,943.60, 633,918,485.24 and 345,700,989.68 is: 520,911,145.53
Step by Step Solution
- Step 1: Write the proportion equation
420,697,943.60 : 633,918,485.24 = 345,700,989.68 : x - Step 2: Convert to fraction form
420,697,943.60/633,918,485.24 = 345,700,989.68/x - Step 3: Cross multiply
420,697,943.60x = 633,918,485.24 × 345,700,989.68 - Step 4: Simplify right side
420,697,943.60x = 219,146,247,723,914,496 - Step 5: Solve for x
x = 219,146,247,723,914,496/420,697,943.60 - Step 6: Final answer
x = 520,911,145.53
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.