Finding the Fourth Proportional to 499,779,388.53, 689,686,909.61 and 276,756,649.65
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Solution
The fourth proportional to 499,779,388.53, 689,686,909.61 and 276,756,649.65 is: 381,919,388.41
Step by Step Solution
- Step 1: Write the proportion equation
499,779,388.53 : 689,686,909.61 = 276,756,649.65 : x - Step 2: Convert to fraction form
499,779,388.53/689,686,909.61 = 276,756,649.65/x - Step 3: Cross multiply
499,779,388.53x = 689,686,909.61 × 276,756,649.65 - Step 4: Simplify right side
499,779,388.53x = 190,875,438,409,742,208 - Step 5: Solve for x
x = 190,875,438,409,742,208/499,779,388.53 - Step 6: Final answer
x = 381,919,388.41
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.