Finding the Fourth Proportional to 493,522,848.51, 681,134,628.08 and 312,486,656.98
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Solution
The fourth proportional to 493,522,848.51, 681,134,628.08 and 312,486,656.98 is: 431,277,869.95
Step by Step Solution
- Step 1: Write the proportion equation
493,522,848.51 : 681,134,628.08 = 312,486,656.98 : x - Step 2: Convert to fraction form
493,522,848.51/681,134,628.08 = 312,486,656.98/x - Step 3: Cross multiply
493,522,848.51x = 681,134,628.08 × 312,486,656.98 - Step 4: Simplify right side
493,522,848.51x = 212,845,482,879,941,408 - Step 5: Solve for x
x = 212,845,482,879,941,408/493,522,848.51 - Step 6: Final answer
x = 431,277,869.95
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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.