Finding the Fourth Proportional to 753,312,530.40, 1,129,968,795.60 and 389,918,277.60
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Solution
The fourth proportional to 753,312,530.40, 1,129,968,795.60 and 389,918,277.60 is: 584,877,416.40
Step by Step Solution
- Step 1: Write the proportion equation
753,312,530.40 : 1,129,968,795.60 = 389,918,277.60 : x - Step 2: Convert to fraction form
753,312,530.40/1,129,968,795.60 = 389,918,277.60/x - Step 3: Cross multiply
753,312,530.40x = 1,129,968,795.60 × 389,918,277.60 - Step 4: Simplify right side
753,312,530.40x = 440,595,486,522,098,432 - Step 5: Solve for x
x = 440,595,486,522,098,432/753,312,530.40 - Step 6: Final answer
x = 584,877,416.40
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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.