Finding the Fourth Proportional to 426,497,595.68, 639,982,458.30 and 208,149,746.42
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Solution
The fourth proportional to 426,497,595.68, 639,982,458.30 and 208,149,746.42 is: 312,339,829.72
Step by Step Solution
- Step 1: Write the proportion equation
426,497,595.68 : 639,982,458.30 = 208,149,746.42 : x - Step 2: Convert to fraction form
426,497,595.68/639,982,458.30 = 208,149,746.42/x - Step 3: Cross multiply
426,497,595.68x = 639,982,458.30 × 208,149,746.42 - Step 4: Simplify right side
426,497,595.68x = 133,212,186,410,773,760 - Step 5: Solve for x
x = 133,212,186,410,773,760/426,497,595.68 - Step 6: Final answer
x = 312,339,829.72
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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.