Finding the Fourth Proportional to 620,778,642.95, 931,482,843.16 and 344,378,836.06
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Solution
The fourth proportional to 620,778,642.95, 931,482,843.16 and 344,378,836.06 is: 516,742,934.02
Step by Step Solution
- Step 1: Write the proportion equation
620,778,642.95 : 931,482,843.16 = 344,378,836.06 : x - Step 2: Convert to fraction form
620,778,642.95/931,482,843.16 = 344,378,836.06/x - Step 3: Cross multiply
620,778,642.95x = 931,482,843.16 × 344,378,836.06 - Step 4: Simplify right side
620,778,642.95x = 320,782,977,334,110,720 - Step 5: Solve for x
x = 320,782,977,334,110,720/620,778,642.95 - Step 6: Final answer
x = 516,742,934.02
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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.