Finding the Fourth Proportional to 1,591,513,811.20, 2,387,270,716.80 and 442,656,467.20
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Solution
The fourth proportional to 1,591,513,811.20, 2,387,270,716.80 and 442,656,467.20 is: 663,984,700.80
Step by Step Solution
- Step 1: Write the proportion equation
1,591,513,811.20 : 2,387,270,716.80 = 442,656,467.20 : x - Step 2: Convert to fraction form
1,591,513,811.20/2,387,270,716.80 = 442,656,467.20/x - Step 3: Cross multiply
1,591,513,811.20x = 2,387,270,716.80 × 442,656,467.20 - Step 4: Simplify right side
1,591,513,811.20x = 1,056,740,821,748,699,776 - Step 5: Solve for x
x = 1,056,740,821,748,699,776/1,591,513,811.20 - Step 6: Final answer
x = 663,984,700.80
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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.