Finding the Fourth Proportional to 499,486,717.08, 749,225,928.69 and 390,403,580.49
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Solution
The fourth proportional to 499,486,717.08, 749,225,928.69 and 390,403,580.49 is: 585,602,129.45
Step by Step Solution
- Step 1: Write the proportion equation
499,486,717.08 : 749,225,928.69 = 390,403,580.49 : x - Step 2: Convert to fraction form
499,486,717.08/749,225,928.69 = 390,403,580.49/x - Step 3: Cross multiply
499,486,717.08x = 749,225,928.69 × 390,403,580.49 - Step 4: Simplify right side
499,486,717.08x = 292,500,485,156,521,472 - Step 5: Solve for x
x = 292,500,485,156,521,472/499,486,717.08 - Step 6: Final answer
x = 585,602,129.45
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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.